A listing of publications by the

PUBLICATIONS

Refereed Journal Publications

A. Rohatgi, T. R. Viverito, and L. H. Slack, "Electrical and Optical Properties of Tin Oxide Films", Journal of American Ceramic Society, vol. 56, no. 6, pp. 278﷓279, June 1974.

2. A. Rohatgi, T. R. Viverito, and L. H. Slack, "Materials for Efficient Reflection of Thermal Energy: Doped Tin Oxide Films", Reviews on High Temperature Materials, vol. 3, no. 2, pp. 139﷓151, 1976.

3. A. Rohatgi, S. R. Butler, F. J. Feigl, H. W. Kraner, and K. W. Jones, "Sodium Passivation in Hcl Oxide Films on Si", Applied Physics Letters, vol. 30, no. 2, pp. 104﷓106, 1977.

4. A. Rohatgi, S. R. Butler, F. J. Feigl, H. W. Kraner, and R. W. Jones, "Chlorine Incorporation in Hcl Oxides", Journal of Electrochemical Society, vol. 126, no. 1, pp. 143﷓149, 1979.

5. A. Rohatgi, S. R. Butler, and F. J. Feigl, "Mobile Sodium Ion Passivation in Hcl Oxides", Journal of Electrochemical Society, vol. 126, no. 1, pp. 149﷓154, 1979.

6. J. W. Chen, A. G. Milnes, and A. Rohatgi, "Titanium in Silicon as a Deep Level Impurity", Journal of Solid State Electronics, vol. 22, no. 9﷓D, pp. 801﷓808, 1979.

7. A. Rohatgi, "Application of DLTS Technique to Study Junctions and Interfaces", Vacuum﷓Surfaces﷓Thin Films, K. L. Chopra and T. C. Goel (eds.), Vanity Books, pp. 115﷓133, 1979.

8. A. Rohatgi, J. R. Davis, R. H. Hopkins, P. Rai﷓Choudhury, P. G. McMullin, and J.R. McCormick, "Effect of Titanium Copper and Iron on Silicon Solar Cells", Journal of Solid State Electronics, vol. 23, pp. 415﷓422, 1980.

9. A. Rohatgi and P. Rai﷓Choudhury, "Process Induced Effects on Lifetime and Defects in Float﷓Zone Silicon", Journal of Electrochemical Society, vol. 127, no. 5, pp. 1136﷓1139, 1980.

10. R. B. Campbell and A. Rohatgi, "Investigation of Contact Systems for Silicon Solar Cells", Journal of Electrochemical Society, vol. 127, no. 12, pp. 2702﷓2704, 1980.

11. J. R. Davis, A. Rohatgi, R. H. Hopkins, P. Rai﷓Choudhury, J. R. McCormick, and P.D. Blais, "Impurities in Silicon Solar Cells," IEEE Transactions on Electron Devices, vol. ED﷓27, no. 4, pp. 677﷓687, 1980.

12. A. Rohatgi, R. H. Hopkins, J. R. Davis, R. B. Campbell, H. C. Mollenkopf, and J.R. McCormick, "The Impact of Molybdenum on Silicon and Silicon Solar Cell Performance", Journal of Solid State Electronics, vol. 23, pp. 1185﷓1190, 1980.

13. A. Rohatgi, R. H. Hopkins, and J. R. Davis, "The Properties of Polycrystalline Silicon Solar Cells with Controlled Titanium Additions", IEEE Transactions on Electron Devices, vol. ED﷓28, no. 1, pp. 103﷓108, 1981.

14. K. W. Loh, D. K. Schroder, R. C. Clarke, A. Rohatgi, and G. W. Eldridge, "Low Leakage Current GaAs Diodes", IEEE Transactions on Electron Devices, vol. ED﷓28, no. 7, pp. 796﷓800, 1981.

15. L. B. Ta, H. M. Hobgood, A. Rohatgi, and R. N. Thomas, "Effects of Stoichiometry on Thermal Stability of Undoped Semi﷓Insulating GaAs", Journal of Applied Physics, vol. 53, no. 8, pp. 5771﷓5775, 1982.

16. A. Rohatgi, J. R. Davis, R. H. Hopkins, and P. G. McMullin, "A Study of Grown﷓In Impurities in Silicon by DLTS", Journal of Solid State Electronics, vol. 26, no. 11, pp. 1039﷓1049, 1983.

17. A. Rohatgi and P. Rai﷓Choudhury, "Defects and Carrier Lifetime in Silicon", Silicon Processing ASTM STP 804, D. C. Gupta (ed.), American Society of Testing and Materials, pp. 389﷓404, 1983.

18. A. Rohatgi and E. F. Federmann, "Importance and Consideration of High Efficiency Solar Cells", Solar Cells, vol. 12, pp. 177﷓183, 1984.

19. A. Rohatgi and P. Rai﷓Choudhury, "Design, Fabrication, and Analysis of 17﷓18% Efficient Surface Passivated Silicon Solar Cells", IEEE Transactions on Electron Devices, vol. ED﷓31, no. 5, pp. 596﷓601, 1984.

20. R. Singh, S. J. Fonash, A. Rohatgi, P. Rai﷓Choudhury, and J. Gigante, "A Low Temperature Process for Annealing Extremely Shallow As+ Implanted n+/p Junctions", Journal of Applied Physics, vol. 55, no. 4, pp. 867﷓870, 1984.

21. S. J. Fonash, R. Singh, A. Rohatgi, P. Rai﷓Choudhury, P. J. Caplan, and E. H. Pointdexter, "Silicon Damage Caused by CCl4 Reactive Ion Etching: Its Characterization and Removal by Rapid Thermal Annealing, Journal of Applied Physics, vol. 58, no. 2, pp. 862﷓866, 1985.

22. X. C. Mu, S. J. Fonash, B. Y. Yang, K. Vedam, A. Rohatgi, and J. Riger, "Ar Ion Beam and CCl4 Reactive Ion Etching: A Comparison of Etching Damage and of Damage
Passivation by Hydrogen", Journal of Applied Physics, vol. 58, no. 11, pp. 4282﷓4291, 1985.

23. A. Rohatgi, "High Efficiency Silicon Solar Cells ﷓ Opportunity and Challenge", Proceedings of the SPIE Critical Reviews of Technology Series-Photovoltaics, vol. 543, pp. 20﷓27, April 1985.

24. A. Rohatgi, "Review of High Efficiency Solar Cells", Proceedings of SPIE ﷓ Photovoltaics for Commercial Solar Power Applications, vol. 706, pp. 15﷓21, 1986.

25. A. Rohatgi, P. Rai﷓Choudhury, S. J. Fonash, P. Lester, R. Singh, P. J. Caplan, and E. H. Pointdexter, "Characterization and Control of Silicon Surface Modification Produced by CCl4 Reactive Ion Etching", Journal of Electrochemical Society, vol. 133, no. 2, pp. 408﷓416, 1986.

26. A. Rohatgi and P. Rai﷓Choudhury, "Approach Toward 20% Efficient Solar Cells", IEEE Transactions on Electron Devices, vol. ED﷓33, no. 1, pp. 1﷓7, 1986.

27. X. C. Mu, S. J. Fonash, A. Rohatgi, and J. Riger, "Comparison of the Damage and Contamination Produced by CF4 and CF4/H2 Reactive Ion Etching", Applied Physics Letters, vol. 48, no. 17, pp. 1147﷓1149, April 1986.

28. R. Sinharoy, R. A. Hoffman, A. Rohatgi, R. F. C. Farrow, and J. H. Riger, "Epitaxial Growth of LaF3 on GaAs (111)", Journal of Applied Physics, vol. 59, no. 1, pp. 273﷓275, 1986.

29. A. Rohatgi, D. L. Meier, P. Rai﷓Choudhury, S. J. Fonash, and R. Singh, "Effect of Low﷓Energy Hydrogen Ion Implantation on Dendritic Web Silicon Solar Cells", Journal of Applied Physics, vol. 59, pp. 4167﷓4171, June 1986.

30. R. H. Hopkins and A. Rohatgi, "Impurity Effects in Silicon for High Efficiency Solar Cells", Journal of Crystal Growth, vol. 75, pp. 67﷓79, 1986.

31. A. Rohatgi and P. Rai﷓Choudhury, "High Efficiency Silicon Solar Cells: Development, Current Issues, and Future Directions", Solar Cells, vol. 17, pp. 119﷓133, 1986.

32. R. Singh, S. J. Fonash, and A. Rohatgi, "Interaction of Low﷓Energy Implanted Atomic H with Slow and Fast Diffusing Metallic Impurities in Si", Applied Physics Letters, vol. 49, no. 13.9, pp. 800﷓802, 1986.

33. S. J. Fonash and A. Rohatgi, "RIE Damage and Its Control in Silicon Processing", Emerging Semiconductor Technology, (D. C. Gupta and P. H. Langer, eds.), American Society for Testing and Materials, ASTM STP 960, pp. 163﷓172, 1986.

34. A. Rohatgi, S. K. Pang, T. K. Gupta, and W. D. Straub, "The Deep Level Transient Spectroscopy Studies of ZnO Varistor as a Function of Annealing", Journal of Applied Physics, vol. 63, pp. 5375﷓5379, 1988.

35. A. Rohatgi, S. A. Ringel, J. Welch, E. Meeks, K. Pollard, A. Erbil, C. J. Summers, P. V. Meyers, and C. H. Liu, "Growth and Characterization of Polycrystalline CdMnTe and CdZnTe Thin Films for Solar Cells", Solar Cells, vol. 24, pp. 185﷓194, 1988.

36. R. K. Dawless, R. L. Troup, D. L. Meier, and A. Rohatgi, "Production of Extreme Purity Aluminum and Silicon by Fractional Crystallization Processing", Journal of Crystal Growth, vol. 89, pp. 68﷓74, 1988.

37. A. B. Dewald, Jr., R. L. Frost, S. A. Ringel, J. P. Schaffer, and A. Rohatgi, "Positron Annihilation Spectroscopy of AlGaAs/GaAs Interfaces in MOCVD﷓Grown GaAs Heterojunction Solar Cells", Journal of Vacuum Science and Technology, vol. A6, pp. 2248﷓2252, 1988.

38. R. L. Frost, A. B. Dewald, Jr., J. P. Schaffer, A. Rohatgi, B. Nielson, and K. G. Lynn, "Slow Positron Annihilation Spectroscopy of Hetero and Homo Junctions of GaAs Based Semiconductor Thin Films", Thin Solid Films, vol. 166, pp. 349﷓357, 1988.

39. Z. C. Feng, R. Sudharsanan, S. Perkowitz, A. Erbil, K. T. Pollard, and A. Rohatgi, "Raman Scattering Characterization of High﷓Quality CdMnTe Films Grown by
Metalorganic Chemical Vapor Deposition", Journal of Applied Physics, vol. 64, pp. 6861﷓6863, 1988.

40. T. F. Ciszek, T. Wang, T. Schuyler, and A. Rohatgi, "Some Effects of Crystal Growth Parameters on Minority Carrier Lifetime in Float﷓Zoned Silicon", Journal of Electrochemical Society, vol. 136, no. 1, pp. 230﷓234, 1989.

41. Z. C. Feng, S. Perkowitz, R. Sudharsanan, A. Erbil, K. T. Pollard, and A. Rohatgi, "Photoluminescence of CdMnTe Films Grown by Metalorganic Chemical Vapor Deposition", Journal of Applied Physics, vol. 66, pp. 1711﷓1716, 1989.

42. S. A. Ringel, A. Rohatgi, and S. P. Tobin, "An Approach Toward 25% Efficient GaAs Heteroface Solar Cells", IEEE Transactions on Electron Devices, vol. 36, no. 7, pp. 1230﷓1237, 1989.

43. R. Sudharsanan, Z. C. Feng, S. Perkowitz, A. Rohatgi, K. T. Pollard, and A. Erbil, "Characterization of MOCVD-Grown CdMnTe Films by Infrared Spectroscopy", Journal of Electronic Materials, vol. 18, no. 3, pp. 453﷓455, 1989.

44. A. Rohatgi, J. P. Schaffer, A. B. Dewald, and R. L. Frost, "Positron Annihilation Spectroscopy: Applications to Si, ZnO, and Multilayer Semiconductor Structures", Journal of Electronic Materials, vol. 18, pp. 721﷓728, 1989.

45. T. K. Gupta, W. D. Straub, M. S. Ramanachalam, J. P. Schaffer, and A. Rohatgi, "Grain Boundary Characterization of ZnO Varistors by Positron Annihilation Spectroscopy", Journal of Applied Physics, vol. 66, no. 12, pp. 6132﷓6137, 1989.

46. A. Rohatgi, S. A. Ringel, R. Sudharsanan, P. M. Meyers, C. Liu, and V. Ramanathan, "Investigation of CdZnTe, CdMnTe, and CdTe Polycrystalline Films for Photovoltaic Applications", Solar Cells, vol. 27, no. 1, pp. 219﷓230, 1989.

47. S. A. Ringel, R. Sudharsanan, A. Rohatgi, M. S. Owens, and H. P. Gillis, "Effects of Annealing and Surface Preparation on the Properties of MBE﷓Grown Polycrystalline CdZnTe Films", Journal of Vacuum Science and Technology, vol. A8, no. 3, pp. 2012﷓2019, May 1990.

48. S. A. Ringel, R. Sudharsanan, A. Rohatgi, and W. B. Carter, "A Study of Polycrystalline Cd(Zn,Mn)Te/CdS Films and Interfaces", Journal of Electronic Materials, vol. 19, no. 3, pp. 259﷓263, 1990.

49. S. K. Pang, A. Rohatgi, B. L. Sopori, and G. Fiegl, "A Comparison of Minority﷓Carrier Lifetime in As﷓Grown and Oxidized Float﷓Zone, Magnetic Czochralski Silicon, and Czochralski Silicon", Journal of Electrochemical Society, vol. 137, no. 6, pp. 1977﷓1980, June 1990.

50. R. Sudharsanan and A. Rohatgi, "Investigation of Metalorganic Chemical Vapor Deposition Grown CdTe/CdS Solar Cells", Solar Cells, vol. 31, pp. 143﷓150, 1991.

51. A. Rohatgi, R. Sudharsanan, S. A. Ringel, and M. McDougal, "Growth and Process Optimization of CdTe and CdZnTe Polycrystalline Films for High Efficiency Cells", Solar Cells, vol. 30, pp. 109﷓122, 1991.

52. S. K. Pang and A. Rohatgi, "Effect of Oxygen Concentration on Lifetime in Magnetic Czochralski Silicon", Journal of Electrochemical Society, vol. 138, pp. 523﷓527, 1991.

53. M. S. Ramanachalam, A. Rohatgi, J. P. Schaffer, and T. K. Gupta, "Characterization of ZnO Varistor Degradation Using Lifetime Positron﷓Annihilation Spectroscopy", Journal of Applied Physics, vol. 69, no. 12, pp. 8380﷓8386, June 1991.

54. S. K. Pang and A. Rohatgi, "Record High Recombination Lifetime in Oxidized Magnetic Czochralski Silicon", Applied Physics Letters, vol. 59, no. 2, pp. 196﷓197, July 1991.

55. S. A. Ringel, A. W. Smith, M. H. McDougal, and A. Rohatgi, "Effects of CdCl2 on Electronic Properties of Molecular Beam Epitaxially Grown CdTe/CdS Heterojunction Solar Cells", Journal of Applied Physics, vol. 70, no. 2, pp. 881﷓889, July 1991.

56. A. Rohatgi, J. P. Schaffer, G. Augustine, and M. S. Ramachalam, "A Review of Selected Techniques for Characterizing Radiation Induced Defects in Solar Cells", Journal of Solar Cells, vol. 3, no. 4, pp. 379﷓394, September 1991.

57. S. A. Ringel and A. Rohatgi, "The Effects of Trap Induced Lifetime Variations on the Design and Performance of High Efficiency GaAs Solar Cells", IEEE Transactions on Electron Devices, vol. 38, no. 11, pp. 2401﷓2409, November 1991.

58. A. W. Smith and A. Rohatgi, "Reevaluation of the Derivatives of the Half Order Fermi Integrals", Journal of Applied Physics, vol. 73,no. 11, pp. 7030﷓7034, June 1993.

59. A. W. Smith and A. Rohatgi, "Non Isothermal Extension of the Scharfetter﷓Gummel Technique for Lot Carrier Transport in Heterostructure Simulations", IEEE Transactions on Computer﷓Aided Design of Integrated Circuits and Systems, vol. 12, No. 10, pp. 1515﷓1513, October 1993.

60. A.W. Smith and A. Rohatgi, "A New Texturing for Producing High Efficiency Solar Cells with No Antireflection Coatings", Solar Energy Materials and Solar Cells, vol. 29, pp. 51﷓65, 1993.

61. A.W. Smith and A. Rohatgi, "Ray Tracing Analysis of the Inverted Pyramid Texturing Geometry for High Efficiency Silicon Solar Cells, Solar Energy Materials and Solar Cells, vol. 29, pp. 37﷓49, 1993.

62. G. Augustine, N.M. Jokerst and A. Rohatgi, "Base Doping Optimization for Radiation Hard Si, GaAs, and InP Solar Cells, IEEE Transactions on Electron Devices, vol. 39, no. 10, pp. 2395﷓2400, October 1992.

63. G. Augustine, N.M. Jokerst, and A. Rohatgi, "Single-Crystal Thin Film InP: Fabrication and Absorption Measurements," Applied Physics Letters, vol. 61, no. 12, pp. 1429﷓1431, September 1992.

64. A. Rohatgi, "A Study of Efficiency Limiting Defects in Polycrystalline CdTe/CdS Solar Cells", International Journal of Solar Energy, vol. 12, pp. 37﷓49, 1992.

65. A. Rohatgi, A. Bhat, and H.C. Chou, "An Improved Understanding of Efficiency Limiting Defects in Polycrystalline CdTe/CdS Solar Cells", American Institute of Physics Conference Proceedings #268. Photovoltaic Advanced Research and Development Project, R. Noufi ed., pp. 243﷓249, October 1992.

66. A. Rohatgi, P. Sana, Z. Chen, and J. Salami, "Approach Towards High Efficiency Polycrystalline Silicon Solar Cells", American Institute of Physics Conference
Proceedings #268. Photovoltaic Advanced Research and Development Project, R. Noufi ed., pp. 413﷓420, October 1992.

67. W.A. Doolittle and A. Rohatgi, "A Novel Computer Based Pseudo﷓Logarithmic Capacitance/Conductance DLTS System Specifically Designed for Transient Analysis", Reviews of Scientific Instruments, vol. 63, no. 12, pp. 5733﷓5741, December 1992.

68. A. Rohatgi, E. R. Weber, and L.C. Kimberling, "Opportunities in Silicon Photovoltaics and Defect Control in Photovoltaic Materials", Journal of Electronic Materials, vol. 22, no. 1, pp. 65﷓72, 1993.

69. P. Sana, J. Salami, and A. Rohatgi, "Fabrication and Analysis of High Efficiency Polycrystalline Silicon Solar Cells", IEEE Transactions in Electron Devices, vol. 40, no. 8, pp. 1461﷓1468, August 1993.

70. Z. Chen, P. Sana, J. Salami, and A. Rohatgi, "A Novel and Effective PECVD SiO2/SiN Antireflection Coating for Si Solar Cells," IEEE Transactions on Electron Devices, vol. 40, no. 6, pp. 1161﷓1165, June 1993.

71. Z. Chen, S.K. Pang, K. Yasutake, and A. Rohatgi, "Plasma Enhanced Chemical Vapor Deposited Oxide for Low Surface Recombination Velocity and High Effective Lifetime in Silicon", Journal of Applied Physics, vol. 74, no. 4, pp. 2856﷓2859, August 1993.

72. M.S. Ramanachalam, A. Rohatgi, W.B. Carter, J.P. Schaffer, and T.K. Gupta, "Photoluminescence and PAS Study of ZnO Varistor Stability", Journal of Applied Physics, vol. 24, no. 4, 1995.

73. Z. Chen, K. Yasutake, A. Doolittle and A. Rohatgi, "Record Low SiO2/Si Interface State Density for Low Temperature Oxides Prepared by Direct Plasma﷓Enhanced Chemical Vapor Deposition", Applied Physics Letters, vol. 63, no. 15, pp. 1﷓3, October 1993.

74. H.C. Chou and A. Rohatgi, "The Impact of MOCVD Growth Ambient on Carrier Transport, Defects, and Performance of CdTe/CdS Heterojunction Solar Cells", Journal of Electronic Materials, vol. 23, no. 1, pp. 1﷓7, January 1994.

75. K. Yasutake, Z. Chen, S.K. Pang and A.Rohatgi, "Modeling and Characterization of Interface State Parameters and Surface Recombination Velocity at Plasma Enhanced Chemical Vapor Deposited SiO2﷓Si Interface", Journal of Applied Physics, vol. 75, no. 4, pp. 2048-2054, February 1994.

76. S.K. Pang and A. Rohatgi, "A New Methodology for Separating Schokley﷓Read﷓Hall Lifetime and Auger Recombination Coefficients from Photoconductivity Decay Technique, Journal of Applied Physics, vol. 74, no. 9, pp. 5554﷓5560, November 1993.

77. P. Sana and A. Rohatgi, "Gettering and Hydrogen Passivation of EFG Multicrystalline Silicon Solar Cells by Al Diffusion and Forming Gas Anneal", Applied Physics Letters, vol. 64, no. 1, pp. 97﷓99, January 1994.

78. W.A. Doolittle and A. Rohatgi, "A New Figure of Merit and Methodology for Quantitatively Determining Defect Resolution Capabilities in Deep Level Transient Spectroscopy Analysis", Journal of Applied Physics, vol. 75, no. 9., pp. 4570-4575, May 1994.

79. W.A. Doolittle and A. Rohatgi, "Comparison of Covariance Linear Predictive Modelling to the Modulation Function Method for Use in Deep Level Transient Spectroscopy", Journal of Applied Physics, vol. 75, no. 9., pp. 4560-4569, May 1994.

80. A. Rohatgi, Z. Chen, P. Sana, N. Evers, R. Ramanachalam and A. Doolittle, "Gettering and Passivation Techniques for Quality Enhancement of Multicrystalline Silicon", American Institute of Physics Conference Proceedings #306. 12th Annual Photovoltaics Review, pp. 505-518, October 1993.

81. A. Rohatgi, H.C. Chou, S. Kamra and A.K. Bhat, "Investigation of Efficiency Limiting Defects and Rapid Thermal Processing of MOCVD Grown CdTe Solar Cells", American Institute of Physics Conference Proceedings #306. 12th Annual Photovoltaics Review, pp. 354-363, October 1993.

82. S.K. Pang, A. Rohatgi, and A.W. Smith, "Effect of Trap Location and Trap﷓Assisted Auger Recombination on Silicon Solar Cell Performance", IEEE Transactions on Electron Device, vol. 42, no.4, pp. 662-668, April 1995.

83. Z. Chen, A. Rohatgi, R.O. Bell and J.P. Kalejs, "Defect Passivation in Multicrystalline-Si Materials by Plasma Enhanced Chemical Vapor Deposition of SiO2/SiN Coatings", Applied Physics Letters, vol. 65, no. 16, pp. 2078-2080, October 1994.

84. H.C. Chou, A.K. Bhat, S. Kamra and A. Rohatgi, "An Investigation of Photocurrent Loss due to Reflectance and Absorption in CdTe/CdS Heterojunction Solar Cells", Journal of Electronic Materials, vol. 23, no. 7, pp. 681-686, July 1994.

85. A. Rohatgi, Z. Chen, P. Sana, J. Crotty, and J. Salami, "Gettering and Passivation Techniques of High Efficiency Multicrystalline Silicon Solar Cells", Solar Energy Materials and Solar Cells, vol. 34, nos. 1-4, pp. 227-236, September 1994.

86. A. Rohatgi, Z. Chen, P. Doshi, T. Pham, and D. Ruby, "High Efficiency Silicon Solar Cells by Rapid Thermal Processing," Applied Physics Letters, vol. 65, no. 16, pp. 2087-2089, October 1994.

87. H.C. Chou, A. Rohatgi, E.W. Thomas, S. Kamra, and A.K. Bhat, "Effects of Cu on CdTe/CdS Heterojunction Solar Cells with Cu/Au Contacts," Journal of the Electrochemical Society, vol. 142, no. 1, pp. 254-259, January 1995.

88. J.B. Lee, Z. Chen, M.G. Allen, and A. Rohatgi, "A Miniaturized High Voltage Solar Cell Array as an Electrostatic MEMS Power Supply," Journal of Microelectromechanical Systems, vol. 4, no. 3, pp. 102-108, September 1995.

89. A. Rohatgi, Z. Chen, P. Sana, N. Evers, P. Lolgen, and R.A. Steeman, "Gettering and Passivation for High Efficiency Multicrystalline Silicon Solar Cells,"OPTOELECTRONICS - Devices and Technologies, vol. 9, no. 4, pp.523-536, December 1994.

90. C. Leguijt, P. Lolgen, J.A. Eikelboom, P.H. Amesz, R.A. Steeman, W.C. Sinke, P.M. Sarro, L.A. Verhoef, P.-P. Michiels, Z.H. Chen and A. Rohatgi, "Very Low Surface Recombination Velocities on 2.5 Ω cm Si Wafers, Obtained With Low-Temperature PECVD of Si-Oxide and Si-Nitride," Solar Energy Materials and Solar Cells, vol. 34, nos. 1-4, pp. 177-181, 1994.

91. P. Doshi, A. Rohatgi, M. Ropp, Z. Chen and D.L. Meier, Rapid Thermal Processing of High-Efficiency Silicon Solar Cells with Controlled In-Situ Anealing, Solar Energy Materials and Solar Cells, vol. 41/42, pp. 31-39, 1996.

92. G. Augustine, A. Rohatgi, N.M. Jokerst and R. Dhere, Concentration-Dependent Near and Above Band Edge Absorption in Doped InP and Its Importance in Solar Cell Modelling, Journal of Applied Physics, vol. 78, no. 4, pp. 2666-2670, August 1995.

93. H.E. Elgamel, A.M. Barnett, A. Rohatgi, Z. Chen, C.Vinckler, J.Nijs, and R. Mertens, Efficient Combination Schemes of High Efficiency Multicrystalline Silicon Solar Cells, Journal of Applied Physics, September 1995.

94. A.Rohatgi, H.C. Chou, N.M. Jokerst, E.W. Thomas, C. Ferekides, S. Kamra, Z.C. Feng, and K.M.Dugan, Effects of CdTe Growth Conditions and Techniques on the Efficiency Limiting Defects and Mechanisms in CdTe Solar Cells, AIP Conference Proceedings,353, pp. 368-375, May 1995.

95. A.Rohatgi, P. Sana, L. Cai, W.A. Doolittle, S. Kamra, P. Doshi, T. Krygowski, and G. Crotty, Fabrication and Analysis of High Efficiency Multicrystalline Silicon Solar Cells, AIP Conference Proceedings, 353, pp. 126-133, May 1995.

96. B.L.Sopori, X. Deng, J.P. Benner, A.Rohatgi, P. Sana, S.K. Estreicher, Y.K. Park,
M.A. Roberson, Hydrogen in Silicon: A Discussion of Diffusion and Passivation Mechanisms, Solar Energy Materials & Solar Cells, 41/42, pp.159-169, July 1995.

97. L.Cai, and A.Rohatgi, Effect of Post PECVD Photo-assisted Anneal on Multicrystalline Silicon Solar Cells, IEEE Transactions on Electron Devices, vol. 44, no. 1, pp. 97-103, August 1995.

98. H.C. Chou, A.Rohatgi, N.M.Jokerst, S.Kamra, S.R. Stock, S.L. Lowrie, R.K.Ahrenkiel and D.H. Levi, Approach Toward High Efficiency CdTe/CdS Heterojunction Solar Cells, Journal of Material Chemistry Physics, 43, pp. 178-182, May 1995.

99. H.C. Chou, A.Rohatgi, N.M. Jokerst,E.W. Thomas, and S.Kamra, Copper Migration in CdTe Hetereojunction Solar Cells, IEEE Transactions on Electron Device, vol. 25, no. 7, pp.1093-1098, 1995.

100. Z.C. Feng, G.K.Lim, H.C.Chou, A.T.S. Wee, A.Rohatgi, and K.L.Tan, Correlations Between the MOCVD-grown CdTe/CdS/SnO2/glass Solar Cell Efficiencies and the Interface/Surface Properties, Journal of Applied Physics, vol.79, no.4, pg.2151-2153, February 1996.

101. S.S. Han, L.Cai, G. May, and A. Rohatgi, Modeling the Growth of PECVD Silicon Nitride Films for Polysilicon Solar Cell Applications Using Neural Networks, IEEE Transactions on Semiconductor Manufacturing, vol.9, no.3, pp. 303-311, August 1995.

102. P.Doshi, J.Mejia, K.Tate, A.Rohatgi, Integration of Screen-Printing and Rapid Thermal Processing Technologies for Silicon Solar Cell Fabrication, IEEE Electron Device Letters, vol. 17, no. 8, pp. 404-409, August 1996.

103. A. Rohatgi and S. Narasimha, Design, Fabrication, and Analysis of Greater than 18% Efficient Multicrystalline Silicon Cells, Solar Cell and Solar Energy Materials, vol. 48, pp.187-197, November, 1996.

104. Z.C. Feng, A. Rohatgi, C.C. Tin, R-Hu, A.T.S. Wee, and K.P. Se, Structural
Optical and Surface Science Studies of 4H-SiC Epilayers Grown by Low Pressure Chemical Vapor Deposition, Journal of Electronic Materials, vol. 25, pp. 917-923, 1996.

105. L.Cai, D. Yang, M.A. El-Sayed, and A.Rohatgi, Effects of Rapid Thermal Anneal on Refractive Index and Hydrogen Content of Plasma-Enhanced Chemical Vapor Deposited Silicon Nitride Films,Applied Physics Letters, vol. 80, no. 9, pp. 5384-5388, November, 1996.

106. L. Cai, S. Han, G. May, S. Kamra, T. Krygowski, and A. Rohatgi, Optimization of Saturation Current Density of PECVD SiN Coated Phosphorus Diffused Emitters Using Neural Network Modeling, Journal of Electronic Materials, vol. 25, no. 11, pp. 1784-1789, November 1996.

107. A. Rohatgi, S. Narasimha, S. Kamra, Fabrication and Analysis of Record High 18.2% Efficient Solar Cells on Multicrystalline Silicon Material, IEEE Electron Device Letters, vol. 17, no. 8, pp. 401-403, August 1996.

108. T. Krygowski, and A. Rohatgi, A Novel Approach Towards the Simultaneous Diffusion of Boron and Phosphorus in Silicon, Journal of Electrochemical Society, vol 144, pp. 346-349, January, 1997.

109. M. Ropp, M. Begovic, A. Rohatgi and R. Long, Design Consideration for Large Roof-Integrated Photovoltaic Arrays, Progress in Photovoltaics, vol. 5, pp. 55-67, September, 1997.

110. P. Doshi, J.Mejia, K. Tate and A. Rohatgi, Modeling and Characterization of High-Efficiency Silicon Solar Cells Fabricated by Rapid Thermal Processing, Screen Printing, and Plasma Enhanced Chemical Vapor Deposition, IEEE Transactions of Electron Devices, vol. 44, no. 9, pp. 1417-1424, September, 1997.

111. P. Doshi, G.E. Jellison and A. Rohatgi, Characterization and Optimization of Absorbing PECVD Antireflection Coatings for Silicon Photovoltaics, Journal of Applied Optics, vol.36, no. 30, pp. 7826-7837, October, 1997.

112. A. Rohatgi, S. Narasimha and L. Cai, Gettering and Passivation of High Efficiency Multicrystalline Silicon Solar Cells, American Institute of Physics Conference Proceedings, vol. 394, pp. 199-213, November,1997.

113. T. Krygowski and A. Rohatgi, A Simultaneously Diffused Textured, In-Situ Oxide AR-Coated Solar Cell Process for High Efficiency Silicon Solar Cells, IEEE Electron Devices Letters, vol. 45, no. 1, pp. 194-199, January 1998.

114. S. Narasimha and A. Rohatgi, Fabrication and Characterization of 18.6% Efficient on Multicrystalline Silicon Solar Cells IEEE Transactions on Electron Devices, vol. 45, no 8, pp. 1776-1783 August, 1998.

115. P.Doshi and A. Rohatgi, 18% Efficient Silicon Photovoltaic Devices by Rapid Thermal Diffusion and Oxidation, IEEE Transactions on Electron Devices, vol. 45, no. 8, pp. 1710-1716, August, 1998.

116. A. Rohatgi, P. Doshi and T. Krygowski, Pushing the Frontiers of Silicon PV Technologies: Novel Approaches to High Efficiency, Manufacturable Silicon Cells,American Institute of Physics , vol. 404, pp. 109-116, March, 1997.

117. S. Narasimha, G. Crotty, A. Rohatgi, and D.L. Meier, Back Surface Field Effects in the 17.3 % Efficient n-type Dendritic Web Silicon Solar Cell, Solid-State Electronics, vol. 42, no. 9, pp. 1631-1640, November, 1997.

118. R.L. Wallace, J.I. Hanoka, A. Rohatgi and G. Crotty, Thin Film String Ribbon, Solar Energy Materials and Solar Cells, vol. 48, pp. 179-186, November, 1997.

119. L. Cai, M. Zou, S. Han, G. May and A. Rohatgi, Investigation of the Properties of Plasma-Enhanced Chemical Vapor Deposited Silicon Nitride and Its Effect on Silicon Surface Passivation, Journal of Applied Physics, vol. 83, no. 11, pp. 5885-5889,
June 1998.

120. S. Narasimha and A. Rohatgi, Effective Passivation of the Low Resistivity Silicon Surface by a Rapid Thermal Oxide/Plasma Silicon Nitride Stack, Applied Physics Letter, vol. 72, pp. 1872-1874, April, 1998.

121. M.E. Ropp, M. Begovic and A. Rohatgi, Prevention of Islanding in Grid-Connected Photovoltaic Systems, Journal of Progress in Photovoltaics, volume 7, Issue 1, 1999 pg. 39-59, February.

122. M.E. Ropp, M. Begovic, A. Rohatgi, Analysis and Performance Assessment of the Active Frequency Drift Method of Islanding Prevention, IEEE Power Engineering Society, April, 1998.

123. D. Ratakonda. R. Singh, L. Vedula, A. Rohatgi, J. Mejia, and S. Narayanan, Rapid Thermal Processing of Screen Printed Ohmic Contacts, Journal of Electrochemical Society, vol. 144, no. 9, pp. 3237-3242, September, 1997.

124. G.E. Jellison, Jr., F.A. Modine, P. Doshi, A. Rohatgi, Spectroscopic Ellipsometry Characterization of Thin-Film Silicon Nitride, pp. 193-197, Thin Solid Films, July, 1998.

125. A. Rohatgi, P. Doshi, J. Moschner, T. Lauinger, A. Aberle and D.S. Ruby, Comprehensive Study of Rapid, Low-Cost Silicon Surface Passivation Technologies, IEEE Transaction on Electron Devices, vol. 47, #5 pp. 987-993, May, 2000.

126. A. Ebong, P. Doshi, S. Narasimha, A. Rohatgi J. Wang and M.A. El-Sayed, The Effect of Low and High Temperature Anneals on the Hydrogen Content and Passivation of Si Surface Coated with SiO2 and SiN Films, Journal of Electrochemical Society, vol. 146, no. 5, pp. 1921-1924, May 1999.

127. T. Krygowski, A. Rohatgi and T. Selzer, A Novel Processing Technology for High-Efficiency Silicon Solar Cells, Journal of the Electrochemical Society, vol. 146, no. 3, March 1999.

128. A. Rohatgi, S. Narasimha, P. Doshi, A. Ebong, and J. Moschner, Rapid Thermal Processing and Screen-Printing for Low Cost Silicon Solar Cells, American Institute of Physics, NCPV Photovoltaics Program Review, edited by M. Al-Jassim, J.P. Thornton, and J.M. Gee, pp. 354-360, March 1999.

129. A. Rohatgi and J. Moschner, Comments on 17.3% Efficiency Metal-Oxide-Semiconductor (MOS) Solar Cells with Liquid-Phase-Deposited Silicon Dioxide IEEE Electron Device Letters, vol. 19, no. 11, pp 447, November 1998.

130. A. Rohatgi, S. Narasimha, A. Ebong and P. Doshi, Understanding and Implementation of Rapid Thermal Technologies for Low-Cost High-Efficiency Silicon Solar Cells, IEEE Transaction on Electron Devices vol. 46, no. 10, pp. 1970 - 1977, October, 1999.

131. R. Singh, K.C. Cherukuri, L. Vedula, A. Rohatgi and S. Narayanan, Low Temperature Shallow Junction Formation Using Vacuum Ultraviolet Photons During Rapid Thermal Processing, vol. 70, no 13, pp. 1700-1702, March, 1997.

132. S. Narasimha, A. Rohatgi and A.W. Weeber, An Optimized Rapid Aluminum Back Surface Field Technique for Silicon Solar Cells, IEEE Transaction on Electron Devices, vol. 46, no. 7, pp. 1363-1370, July, 1999.

133. M. E. Ropp, M. Begovic, A. Rohatgi, G. Kern, R. Bonn, and S. Gonzalez, Determining the Relative Effectiveness of Islanding Detection Methods Using Phase Criteria and Nondetection Zones, IEEE Transaction on Electron Devices, vol. 15, no. 3, pp. 290-296, March, 1999.

134. R. Singh, V. Parihar, S. Venkataraman, K.F. Poole, R.P.S. Thakur, and A. Rohatgi
Changing from Rapid Thermal Processing to Rapid Photothermal Processing:What
Does It Buy for a Particular Technology?, Materials Science in Semiconductor Processing, pp. 219-230, 1999.

135. A. Rohatgi, Fundamental Understanding and Development of High Quality Screen-Printed Contacts for Silicon Solar Cells, submitted for publication in Journal of Electronic Materials, June, 1999.

136. J. B. Lee, M.G. Allen, and A. Rohatgi, Photovoltaic On-Demand Pulse Generator as an On-Board Power Source for Electrostatic Actuator Array, SPIE Symposium on Micromachining and Microfabrication, Santa Clara, California, September 19-23, 1999.

137. A. Ebong, J. Brody, A. Rohatgi and T. Williams, Optimization of Front Metal Contact Firing Scheme To Achieve High Fill Factors On Screen Printed Silicon Solar Cells, Solar Energy Materials and Solar Cells, vol. 65, no. 1-4, pp. 613-619, January 2001.

138. D.L. Meier, H.P. Davis, R. A. Garcia, J. Salami, A. Rohatgi, A. Ebong, and P. Doshi Aluminum Alloy Back P-N Junction Dendritic Web Silicon Solar Cell, Solar Energy Materials and Solar Cells, vol. 65, no. 1-4, pp. 621-627, January 2001.

139. S. Venkataraman, R. Singh, V. Parihar, K. F. Poole, A. Rohatgi, V. Yelundur, and A.Ebong, A Study of the Effect of Ultraviolet (UV) and Vacuum Ultra Violet (VUV) Photons on the Minority Carrier Lifetime of Single Crystal Silicon Processed by Rapid Thermal and Rapid Photothermal Processing, Journal of Electronic Materials, vol. 28, no. 12, pp. 1394-1398, December,1999.

140. A. Rohatgi, A. Ebong, V. Yelundur and A. Ristow, Rapid Thermal Processing of Next Generation Silicon Solar Cells, Progress in Photovoltaics Research and Applications, vol. 8, pp. 515-527, July, 2000.

141. V. Yelundur, A. Rohatgi, A. Ebong, A.M. Gabor, J. Hanoka, R.L. Wallace, Al-Enhanced PECVD SiNx induced Hydrogen Passivation in String Ribbon Silicon, Journal of Electronic Materials, vol. 30, no 5, pp. 526-529, February, 2000.

142. A. Ebong, J. Brody, A. Rohatgi, and T. Williams, Optimization of Front Metal Contact Firing Scheme To Achieve High Fill Factors On Screen Printed Silicon Solar Cells, Solar Energy Materials & Solar Cells, vol. 65, pp. 613-619, February, 2001.

143. J.Jeong, M. Rosenblum, J. Kalejs and A. Rohatgi, Hydrogenation of Defects in Edge-Defined Film-Fed Grown Aluminum-Enhanced Plasma Enhanced Chemical Vapor Deposited Silicon Nitride Multicrystalline Silicon, Journal of Applied Physics, vol. 87, #10, pp 7551-7557, May, 2000.

144. B. Damiani, A.H. Ristow, A.Ebong, and A. Rohatgi, Design Optimization for Higher Stabilized Efficiency and Reduced Light Induced Degradation in Boron Doped Czochralski Silicon Solar Cells, Progress in Photovoltaics, vol. 10, pp. 185-193, January, 2001.

145. A. Ebong, M. Hilali, A. Rohatgi, D. Meier, and D.S. Ruby, Belt Furnace Gettering and Passivation of n-Web Silicon for High Efficiency Screen-Printed Front Surface Field Solar Cells, Progress in Photovoltaics, vol. 9, pp. 327-332, February, 2001.

146. J. Brody, and A. Rohatgi, Analytical Approximation of Effective Surface Recombination Velocity of Dielectric-Passivated P-Type Silicon, Journal of Solid State Electronics, vol. 45, pp. 1549-1557, February, 2001.

147. J. Brody, A. Rohatgi, and V. Yelundur, Bulk Resistivity Optimization for Low Bulk-Lifetime Silicon Solar Cells, Progress in Photovoltaics, vol. 9, pp. 273-285, February, 2001.

148. M.Hilali, A. Ebong, A. Rohatgi and D.L. Meier, Resistivity Dependence of Minority Carrier Lifetime and Cell Performance in P-Type Dendritic Web Silicon Ribbon , Journal of Solid State Electronics, vol. 45, pp.1973-1978, June, 2001.

149. J. Brody, and A. Rohatgi, “Review and Comparison of Equations Relating Bulk Lifetime and Surface Recombination Velocity to Effective Lifetime Measured Under Flash Lamp Illumination,” Journal of Applied Physics, vol. 77, pp. 293-301, July 2002.

150. A. Ebong, Y.H. Cho, M. Hilali, A. Rohatgi and D. Ruby, “Rapid Thermal Technologies for High Efficiency Silicon Solar Cells,” Solar Energy Materials & Solar Cells, vol 74. pp. 51-55, August, 2002.

151. A. Rohatgi, V. Yelundur, J. Jeong, A. Ebong, M.D. Rosenblum, and R.L. Wallace, “Fundamental Understanding and Implementation of Al-Enhanced PECVD SiNx Hydrogenation in Silicon Ribbons,” vol. 74, no. 1-4, pp. 117-126, Solar Energy Materials & Solar Cells, October 20, 2002.

152. J. Brody and A. Rohatgi, “Sensitivity Analysis of Two-Spectrum Separation of Surface and Bulk Components of Minority Carrier Lifetimes,” Journal of Solid State Electronics, vol. 46, pp. 859-866, March 2002.

153. V. Yelundur, A. Rohatgi, J.W. Jeong, J. Hanoka, “Improved String Ribbon Silicon Solar Cell Performance by Rapid Thermal Firing of Screen-Printed Contacts,” IEEE Transaction on Electron Devices, vol. 49, no. 8, pp 1405-1410, February 2002.

154. M. Begovic, A. Pregelj, A. Rohatgi and C. Honsberg, “Green Power: Status and Perspectives,” IEEE Transactions on Electron Devices, vol. 89, no. 12, pp 1734-1743, December 2001.

155. J. W. Jeong, A. Rohatgi, V. Yelundur, A. Ebong, M.D. Rosenblum and J.P. Kalejs, “Enhanced Silicon Solar Cell Performance by Rapid Thermal Firing of Screen Printed Metals,” IEEE Electron Devices Society, vol. 48, no. 12, pp. 2836-2841, May, 2001.

156. A. Rohatgi, and J.W. Jeong, “High Efficiency Screen-Printed Silicon Ribbon Solar Cells by Effective Defect Passivation and Rapid Thermal Processing,” Applied Physics Letters, vol. 82, no. 2, pp 224-226, July, 2002.

157. D. S. Ruby, S. H. Zaidi, S. Narayanan, B. M. Damiani and A. Rohatgi, “Rie-texturing of Multicrystalline Silicon Solar Cells,” Solar Energy Materials & Solar Cells, vol. 74, pp. 133-137, October, 2002.

158. A. Rohatgi, D.S. Kim, K. Nakayashiki, V. Yelundur and B. Rounsaville, “High-Efficiency Solar Cells on Edge-Defined Film-Fed Grown (18.2%) and String Ribbon (17.8%) Silicon by Rapid Thermal Processing,” Applied Physics Letters, vol. 84, no.1, pp. 145-147, January, 2004.

159. K. Nakayashiki, V. Meemongkolkiat and A. Rohatgi, “High Efficiency Screen-Printed EFG Si Cells Through Rapid Thermal Processing-Induced Bulk Lifetime Enhancement,” accepted for publication in Progress in Photovoltaics, May, 2004.

160. A. Pregelj, M. Begovic and A. Rohatgi, “Quantitative Techniques for Analysis of Large Data Sets in Renewable Distributed Generation,” IEEE Transaction on Electron Devices,
submitted for publication, February, 2004.

161. A. Rohatgi, M. Hilali and K. Nakayashiki, “High-Efficiency Screen-Printed Solar Cell on Edge-Defined Film-Fed Grown Ribbon Silicon Through Optimized Rapid Belt Co-Firing of Contacts and High-Sheet-Resistance Emitter,” Applied Physics Letters, vol 84, no. 3409, pp. 152-154, February, 2004.

162. K. Nakayashiki, D. S. Kim, A. Rohatgi, B. R. Bathey, “Understanding of the RTP-assisted Reduction of Hydrogen Dissociation from Defects in EFG Si,” Solar Energy Materials & Solar Cells, January 26-30, 2004, Chulalongkorn University, Bangkok, Thailand.

163. V. Meemongkolkiat, M. Hilali, K. Nakayashiki, and A. Rohatgi, “Process and Material Dependence of Al-BSF in Crystalline Si Solar Cells,” Solar Energy Materials & Solar Cells, January 26-30, 2004, Chulalongkorn University, Bangkok, Thailand.

164. A. Rohatgi, D. S. Kim, V. Yelundur, K. Nakayashiki, A. Upadhyaya, M. Hilali, V. Meemongkolkiat, “Record-High-Efficiency Solar Cells on Multicrystalline Materials Through Understanding and Implementation of RTP-Enhanced SiNx-induced Defect Hydrogenation,” Solar Energy Materials & Solar Cells, January 26-30, 2004, Chulalongkorn University, Bangkok, Thailand.

165. F. Jiang, M. Stavola, A. Rohatgi, D. Kim, J. Holt, H. Atwater and J. Kalejs, “Hydrogenation of Si from SiNx Films: Characterization of H introduced into the Si,” Applied Physics Letters, vol. 83 no. 5, pp. 931-933, August, 2003.
166.     M. Hilali, A. Rohatgi, S. Asher, “Development of Screen-Printed Silicon Solar Cells with High Fill Factors on 100 W/sq Emitters,” IEEE Transactions on Electron Devices, vol. 51, no.6, pp. 948-955, June 2004.

167.     I. Tarasov, S. Ostapenko, K. Nakayashiki and A. Rohatgi, “Defect Passivation in Multicrystalline Silicon for Solar Cells,” Applied Physics Letters, vol. 85, no 19, November, 2004.
168.    K. Nakayashiki, A. Rohatgi, S. Ostapenko and I. Tarasov, “Minority Carrier Lifetime Enhancement in Edge-Defined Film-Fed Grown Si through Rapid Thermal Processing-Assisted Reduction of Hydrogen-Defect Dissociation,” accepted in the American Institute of Physics, January, 2005.
169.     A. Upadhyaya, M. Sheoran and A. Rohatgi “High-Efficiency Screen-Printed Belt Co-Fired Solar Cells on Cast Multicrystalline Silicon” Applied Physics Letters,   vol. 86, pp.1-5, January, 2005.

170.     D.S. Kim, V. Yelundur, K. Nakayashiki, B. Rounsaville, V. Meemongkolkiat, A. M. Gabor and A. Rohatgi, “Ribbon Si Solar Cells with Efficiencies over 18% by Hydrogenation of Defects” submitted for publication, Solar Energy and Solar Cells, March, 2005.

171.     K. Nakayashiki, V. Meemongkolkiat and A. Rohatgi, “Effect of Material Inhomogeneity on the Open-Circuit Voltage of String Ribbon Si Solar Cells,”   IEEE Transaction on Electron Devices, vol.52, no. 10, pp. 2243-2249, October, 2005.

172.     V. Meemongkolkiat, K. Nakayashiki, A. Rohatgi, G. Crabtree, J. Nickerson and T.L. Lester, “Resistivity and Lifetime Variation along Commercially Grown Ga- and B-Doped Czochralski Si Ingots and Its Effect on Light-Induced Degradation and Performance of Solar Cells”, vol. 14, pp. 125-134, Progress in Photovoltaics, March, 2006.

173.          M. Hilali, K. Nakayashiki, C. Khadilkar, R. Reedy, B.To, A. Rohatgi, A. Shaikh and S. Kim, “The Effect of Ag Particle Size in Thick-Film Ag Paste on the Electrical and Physical Properties of Screen-Printed Contacts and Silicon Solar Cells”, Journal of Electrochemical Society,    vol. 153, no. 1, pp A5-A11, 2006.

174.     M. Hilali, M. M. Al-Jassim, B. To, H. Moutinho, A. Rohatgi and S. Asher, “Understanding the Formation and Temperature Dependence of Thick-Film Ag Contacts on High Sheet-Resistance Si Emitters for Solar Cells, Journal of the Electrochemical Society, vol. 153, no. 10, pp. G742-G749, April, 2005.

175.     V. Meemongkolkiat, K. Nakayashiki, D.S. Kim, R. Kipecek and A. Rohatgi, “Factors Limiting the Formation of Uniform and Thick Al-Back Surface Field and Its Potential,” Journal of Electrochemical Society, vol. 153., no 1, pp. G53-G58, 2006.

176.     M. Hilali, K. Nakayashiki and A. Rohatgi, “High Efficiency (19%) Screen-Printed Textured Cells on Low-Resistivity Float-Zone Silicon with High Sheet-Resistance Emitters,” vol. 14, no. 2, p. 135-144, Progress in Photovoltaics, October, 2005.

177.     D.S. Kim, M.M. Hilali, A. Rohatgi, K. Nakano, A. Hariharan and K. Matthei, “Development of a Novel Phosphorus Spray Diffusion System for Low Cost Silicon Solar Cells,” submitted for publication in Journal of Electrochemical Society, September, 2005.

178.     A. Rohatgi, A. Upadhyaya and M. Sheoran, “High-Efficiency Screen-Printed Belt Co-Fired Solar Cells on Cast Multicrystalline Silicon,” Applied Physics Letters, vol. 86, no. 5, pp. 54103, 1-3, 2005.

179.     D.S. Kim, A.M. Gabor and A. Rohatgi, “String Ribbon Silicon Solar Cells with 17.8% Efficienciey”, Journal of the Korean Physical Society, vol. 47, no.1, pp 157-162, 2005.

180.     K.Nakayashiki, B. Rounsaville, V.Yelundur, D.S. Kim and A. Rohatgi, “Fabrication and Analysis of High-Efficiency String Ribbon Si Solar Cells, submitted for publication in Journal of Solid State Electronics, February, 2006.

Papers in Conference Proceedings (refereed)

1.J.R. Davis, A. Rohatgi, P. Rai﷓Choudhury, P. D. Blais, R. H. Hopkins, and J.R. McCormick, "Characterization of the Effects of Metallic Impurities on Silicon Solar Cell Performance", Proceedings of the 13th IEEE Photovoltaic Specialists Conference, Washington D.C, pp. 490﷓495, 1978.

2. R. G. Seidensticker, R. E. Kothmann, J. P. McHugh, C. S. Duncan, R. H. Hopkins, P. D. Blais, J. R. Davis, and A. Rohatgi, "Computer Modeling of Dendritic Web Growth Process and Characterization of the Material", Proceedings of the 13th IEEE Photovoltaic Specialists Conference, Washington D.C, pp. 358﷓362, 1978.

3. J. Davis and A. Rohatgi, "Theoretical Design Considerations for Back Surface Field Solar Cells", Proceedings of the 14th IEEE Photovoltaic Specialists Conference, San Diego, California, pp. 569﷓572, January 1980.

4. R. B. Campbell, A. Rohatgi, E. J. Seman, J. R. Davis, P. Rai﷓Choudhury, and B. D. Gallagher, "Solar Cells and Modules from Dendritic Web Silicon", Proceedings of the 14th IEEE Photovoltaic Specialists Conferences, San Diego, California, pp. 332﷓336, January 1980.

5. A. Rohatgi, R. B. Campbell, J. R. Davis, R. H. Hopkins, P. Rai﷓Choudhury, and J. R. McCormick, "POCl Gettering of Titanium, Molybdenum, and Iron Contaminated Silicon Solar Cells", Proceedings of the 14th IEEE Photovoltaic Specialists Conference, San Diego, California, pp. 908﷓911, January 1980.

6. A. Rohatgi, "Radiation Tolerance of Boron Doped Dendritic Web Silicon Ribbon", Proceedings of the Fourth Solar Cell High Efficiency and Radiation Damage Conference, NASA Lewis Research Center, Cleveland, Ohio, pp. 281﷓284, 1980.

7. A. Rohatgi, J. R. Davis, P. Rai﷓Choudhury, R. G. Seidensticker, and R. B. Campbell, "High Efficiency and Radiation Hard Solar Cells from Dendritic Web Silicon Ribbon", Proceedings of the Symposium on Materials and New Processing Technologies for Photovoltaics, J. A. Amick et al. (eds.), Electrochemical Society, vol. 81﷓3, pp. 108﷓118, 1981.

8. M. H. Hanes, R. H. Hopkins, A. Rohatgi, P. Rai﷓Choudhury, R. B. Campbell, and M. H. Mollenkopf, "The Thermal Stability of Impurities in Silicon Solar Cells", Proceedings of the 15th IEEE Photovoltaic Specialists Conference, Orlando, Florida, pp. 530﷓533, June 1981.

9. R. H. Hopkins, J. R. Davis, and A. Rohatgi, "Silicon Purity: Impact on Crystal Growth and Silicon Properties", Proceedings of the Silicon Materials Preparation Workshop JPL, Tempe, Arizona, 1982.

10. J. R. Davis, R. H. Hopkins, and A. Rohatgi, "Definitions of Solar Grade Silicon", Proceedings of the Third Symposium on Materials and New Processing Technologies for Photovoltaics, J. P. Dismukes et al. (eds.), Electrochemical Society, vol. 82﷓8, pp. 14﷓25, 1982.

11. H. M. Hobgood, L. B. Ta, A. Rohatgi, and R. N. Thomas, "Residual Impurities and Defect Levels in Semi﷓Insulating GaAs Grown by Liquid Encapsulated Czochralski", Second Proceedings of the Semi﷓Insulating III﷓V Materials, S. Makram﷓Ebeid and B. Tuck (eds.), Shiva Publishing Ltd., Cheshire, England, pp. 28﷓35, 1982.

12. A. Rohatgi, J. R. Davis, R. H. Hopkins, and P. Rai﷓Choudhury, "Impurities in Polysilicon Solar Cells", Proceedings of the 16th IEEE Photovoltaic Specialists Conference, San Diego, California, pp. 411﷓416, 1982.

13. R. Singh, S. J. Fonash, A. Rohatgi, and P. Rai﷓Choudhury, "Low Energy Hydrogen Implantation Passivation for Web Silicon", Proceedings of the European Photovoltaics Conference, Athens, Greece, October 1983.

14. A. Rohatgi and P. Rai﷓Choudhury, "Surface Passivated High Efficiency Solar Cells, Proceedings of the 17th IEEE Photovoltaic Specialists Conference, Orlando, Florida, pp. 409﷓414, 1984.

15. E. F. Federmann and A. Rohatgi, "The Decisive Impact of Cell Efficiency on the Implementation of Photovoltaic Systems, Proceedings of the 17th IEEE Photovoltaic Specialists Conference, Orlando, Florida, pp. 520-526, 1984.

16. D. L. Meier, R. B. Campbell, A. Rohatgi, P. Alexander, S. J. Fonash, and R. Singh, "Emitter Formation in Dendritic Web Silicon Solar Cells", Proceedings of the 17th IEEE Photovoltaic Specialists Conference, Orlando, Florida, pp. 427-433, 1984.

17. R. C. Clarke, M. C. Driver, and A. Rohatgi, "Reactive Ion Etching of 3﷓D Structures in GaAs", Proceedings of the Gomac Conference, Las Vegas, Nevada, pp. 340-344, November 1984.

18. A. Rohatgi, P. Rai﷓Choudhury, T. W. O’Keefe, and B. E. Yoldas, "High Efficiency Solar Cells in Float Zone and Dendritic Web Silicon Ribbon", Proceedings of the Symposium on Materials and New Processing Technologies for Photovoltaics, J. P. Dismukes et al. (eds.), Electrochemical Society, vol. 85﷓9, pp. 252﷓260, 1985.

19. A. Rohatgi, "Process and Design Considerations for High Efficiency Solar Cells", Proceedings of the Flat﷓Plate Solar Array Project Research Forum on High Efficiency Crystalline Silicon Solar Cells, JPL Publication 85﷓38, pp. 429﷓442, May 1985.

20. A. Rohatgi, S. Gupta, P. G. McMullin, P. A. Palaschak, P. Rai﷓Choudhury, and B. D. Gallagher, "Laser Written Metallization Patterns for Low﷓Cost High﷓Efficiency Solar Cells", Proceedings of the 18th IEEE Photovoltaic Specialists Conference, Las Vegas, Nevada, pp. 782﷓786, October 1985.

21. D. L. Meier, J. Greggi, A. Rohatgi, T. W. O'Keefe, P. Rai﷓Choudhury, R. B. Campbell, and S. Mahajan, "Twin Plane Effects in Dendritic Web Silicon", Proceedings of the 18th IEEE Photovoltaic Specialists Conference, Las Vegas, Nevada, pp. 596﷓603, October 1985.

22.. Rohatgi, D. L. Meier, T. W. O'Keefe, and P. Rai﷓Choudhury, "High Efficiency Solar Cells on Low﷓Resistivity Dendritic Web Silicon Ribbon", Proceedings of the 18th IEEE Photovoltaic Specialists Conference, Las Vegas, Nevada, pp. 50﷓54, October 1985.

23. A. Rohatgi, "A Review of High﷓Efficiency Silicon Solar Cells", Proceedings of the 18th IEEE Photovoltaic Specialists Conference, Las Vegas, Nevada, pp. 7﷓13, October 1985.

24. R. B. Campbell, E. Dombrowski, J. R. Easoz, E. L. Kochka, C. S. Duncan, R. H. Hopkins, D. L. Meier, J. P. McHugh, A. Rohatgi, P. Rai﷓Choudhury, and R. G. Seidensticker, "Status of Solar Cells and Modules Fabricated from Dendritic Web Silicon", Proceedings of the 18th IEEE Photovoltaic Specialists Conference, Las Vegas, Nevada, pp. 465﷓469, October 1985.

25. T. F. Ciszek, T. Wang, and A. Rohatgi, "Some Effects of Crystal Growth Parameters on Minority Carrier Lifetime in Float﷓Zoned Silicon", Proceedings of the Symposium on Materials and New Processing Technologies for Photovoltaics, Electrochemical Society, vol. 87﷓10, pp. 230-234, 1987.

26. S. K. Pang, J. Schaffer, and A. Rohatgi, "Effect of Oxygen on Lifetime and Defects in Magnetic Czochralski Silicon, Proceedings of the 19th IEEE Photovoltaic Specialists Conference, New Orleans, Louisiana, pp. 1500﷓1501, May 1987.

27. S. K. Pang, A. Rohatgi, and T. F. Ciszek, "Doping Dependence of Minority Carrier Lifetime in Silicon Ga-Doped", Proceedings of the 20th IEEE Photovoltaic Specialists Conference, Las Vegas, Nevada, pp. 435﷓440, Sept. 1988.

28. A. W. Smith and A. Rohatgi, "Modeling the Effect of Trap Level on Optimum Resistivity for High Efficiency Cells", Proceedings of the 20th IEEE Photovoltaic Specialists Conference, Las Vegas, Nevada, pp. 729﷓734, Sept. 1988.

29. G. Augustine, A. W. Smith, A. Rohatgi, and C. J. Keaveny, "Characterization and Modeling of InP Solar Cells", Proceedings of the 20th IEEE Photovoltaic Specialists Conference, Las Vegas, Nevada, pp. 903﷓907, Sept. 1988.

30. S. A. Ringel and A. Rohatgi, "Material Quality and Design Optimization for High Efficiency GaAs Solar Cells", Proceedings of the 20th IEEE Photovoltaic Specialists Conference, Las Vegas, Nevada, pp. 666﷓671, Sept. 1988.

31. A. Rohatgi, R. Sudharsanan, S. A. Ringel, M. V. Meyers, and C. H. Liu, "Wide Bandgap Thin Film Solar Cells from CdTe Alloys", Proceedings of the 20th IEEE Photovoltaic Specialists Conference, Las Vegas, Nevada, pp. 1477﷓1481, Sept. 1988.

32. S. Perkowitz, Z. C. Feng, A. Erbil, R. Sudharsanan, K. T. Pollard, and A. Rohatgi, "Raman and Photoluminescence Analysis of CdMnTe Thin Films", Proceedings of SPIE ﷓Raman Scattering, Luminescence, and Spectroscopic Instrumentation in Technology, pp. 76﷓84, 1989.

33. A. Rohatgi, J. P. Schaffer, and A. B. Dewald, "Defect Characterization in Semiconductors by Positron Annihilation Spectroscopy", Proceedings of the Symposium on Materials and New Processing Technologies for Photovoltaics, T. J. Shaffner and D. K. Schroder (eds.), Electrochemical Society, vol. 88﷓20, pp. 168﷓184, 1988.

34. A. Rohatgi, A. W. Smith, S. K. Pang, and P. A. Basore, "Impact of Deep Level Positron and Light Trapping on Silicon Cell Performance", Proceedings of the 4th International Photovoltaic Science and Engineering Conference, Sydney, Australia, February 1989.

35. A. Rohatgi, A. W. Smith, and S. A. Ringel, "Effects of Deep Levels, Injection Level, and Light Trapping on Design and Performance of High Efficiency Solar Cells,
Proceedings of the DOE/Sandia Crystalline Photovoltaic Technology Project Review Meeting, pp.70﷓75, July 1989.

36. A. Rohatgi, C. J. Summers, A. Erbil, R. Sudharsanan, S. A. Ringel, P. V. Meyers, and C. H. Liu, "Current Status and Future Directions of Cd (Zn,Mn)Te/CdS Solar Cells", Proceedings of the Polycrystalline Thin Film Program Meeting, Denver, Colorado, pp. 45﷓50, August 1989.

37. A. Rohatgi, W. A. Doolittle, and A. W. Smith, "Doping and Oxygen Dependence of Efficiency of EFG Solar Cells", Proceedings of the 21st IEEE Photovoltaic Specialists Conference, Orlando, Florida, pp. 561﷓587, May 1990.

38. R. Sudharsanan and A. Rohatgi, "Effects of Pre﷓Heat Treatment of CdS or MOCVD CdTe/CdS Solar Cell Performance", Proceedings of the 21st IEEE Photovoltaic Specialists Conference, Orlando, Florida, pp. 504﷓508, May 1990.

39. A. W. Smith, A. Rohatgi, and S. C. Neel, "Texture: A Ray Tracing Program for the Photovoltaic Community", Proceedings of the 21st IEEE Photovoltaic Specialists Conference, Orlando, Florida, pp. 426﷓431, May 1990.

40. W. A. Doolittle, A. Rohatgi, and R. Brenneman, "Correlation Between Impurities, Defects, and Cell Performance in Semicrystalline Silicon", Proceedings of the 21st IEEE Photovoltaic Specialists Conference, Orlando, Florida, pp. 681﷓686, May 1990.

41. G. Augustine, A. Rohatgi, and N. Jokerst, "Optimization of Base Doping for Radiation Hard InP Solar Cells", Proceedings of the 3rd Indium Phosphide and Related Materials Conference Proceedings, Cardiff, Wales, U.K., pp. 60﷓63, April 1991.

42. Z. Chen, A. Rohatgi, and P. Sana, "Effects of Illumination Level on Diffusion Length and Efficiency of Poly﷓Si Cells", Proceedings of the 22nd IEEE Photovoltaic Specialists Conference, Las Vegas, Nevada, pp. 1051﷓1056, October 1991.

43. B. L. Sopori, K. M. Jones, X. R. Matson, M. Al﷓Jassim, S. Tsuo, W. A. Doolittle, and A. Rohatgi, "Hydrogen in Silicon: Diffusion and Defect Passivation", Proceedings of the 22nd IEEE Photovoltaic Specialists Conference, Las Vegas, Nevada, pp.833﷓841, October 1991.

44. R. R. King, E. W. Thomas, W. B. Carter, and A. Rohatgi, "The Effect of Aluminum and Boron Solid﷓Source Doping on Recombination in Silicon Solar Cells", Proceedings of the 22nd IEEE Photovoltaic Specialists Conference, Las Vegas, Nevada, pp. 229﷓234, October 1991.

45. A. Rohatgi, S. A. Ringel, R. Sudharsanan, and H. C. Chou, "An Improved Understanding of Efficiency Limiting Defects in Polycrystalline CdTe/CdS Solar Cells", Proceedings of the 22nd IEEE Photovoltaic Specialists Conference, Las Vegas, Nevada, pp. 962﷓966, October 1991.

46. A. Rohatgi and R. Sudharsanan, "MOCVD of Compound Semiconductors for Photovoltaics", Proceedings of the 6th International Photovoltaic Science and Engineering Conference, New Delhi, India, pp. 835﷓842, February 1992.

47. G. Augustine, N.M. Jokerst, and A. Rohatgi, "Absorption Measurements of Doped Thin Film InP for Solar Cell Modeling", Proceedings of the 4th International Conference on Indium Phosphide Related Materials, New Port, Rhode Island, pp. 557﷓560, April 1992.

48. A. Rohatgi, P. Sana, and J. Salami, "Record High Efficiency Solar Cells on Cast Polycrystalline Silicon", 11th European Photovoltaic Solar Energy Conference, Montreaux, Switzerland, pp. 159﷓163, October 1992.

49. G. Augustine, B.M. Keyes, N.M. Jokerst, A. Rohatgi, and R.K. Ahrenkiel, "Time﷓Resolved Photoluminescence Studies on Transferred Thin Film InP Epilayers", to be published in Proceedings of the 5th International Conference on Indium Phosphide Related Materials, pp. 636-639, Paris, France, April 1993.

50. P. Sana, A. Rohatgi, J.P. Kalejs, and R.O. Bell, "The Effect of Aluminum Treatment and Forming Gas Anneal on EFG Silicon Solar Cells," Proceedings of the 23rd IEEE Photovoltaic Specialists Conference, Louisville, KY, pp. 111﷓116, May 1993.

51. H.C. Chou, A. Rohatgi, A.K. Bhat, S. Kamra, R.R. Arya, and R.K. Ahrenkiel, "The Effects of CdTe Mole Ratio in the MOCVD Growth Ambient on CdTe Solar Cells," Proceedings of the 23rd IEEE Photovoltaic Specialists Conference, Louisville, KY, pp. 481﷓485, May 1993.

52. A. Rohatgi, P. Sana, M.S. Ramanachalam, and W. B. Carter, "Investigation of the Effects of Aluminum Treatment on Silicon Solar Cells," Proceedings of the 23rd IEEE Photovoltaic Specialists Conference, Louisville, KY, pp. 52﷓57, May 1993.

53. A. Rohatgi, Z. Chen, G. Crotty, and J. Salami, "Gettering and Passivation of High Efficiency Multicrystalline Silicon Solar Cells," Technical Digest of the 7th International Photovoltaic Science and Engineering Conference, Nagoya, Japan,
pp. 93-97, November 1993.

54. K. Yasutake, H. Kakiuchi, K. Yoshi, H. Kawabe, Z. Chen, S.K. Pang, and A. Rohatgi, "Surface Recombination Velocity and Interface State Parameters at Si-Si02 Interface Prepared by Low Temperature Plasma Processes," Technical Digest of the 7th International Photovoltaic Science and Engineering Conference, Nagoya, Japan, pp. 549-550, November 1993.

55. C. Leguijt, P. Lolgen, J.A. Eikelboom, P.H. Amesz, R.A. Steeman, W.C. Sinke, P.M. Sarro, L.A. Verhoef, P -P. Michiels, Z.H. Chen and A. Rohatgi, "Very Low Surface Recombination Velocities on 2.5 Ωcm Si Wafers, Obtained with Low-Temperature PECVD of Si-oxide and Si-nitride," Technical Digest of the 7th International Photovoltaic Science and Engineering Conference, Nagoya, Japan, pp. 551-552, November 1993.

56. J.B. Lee, Z. Chen, M.G.Allen, A. Rohatgi and R. Arya, "A High Voltage Solar Cell Array as an Electrostatic MEMS Power Supply", Proceedings 7th IEEE Workshop on Micro Electro Mechanical Systems, Oiso, Japan, pp. 331-336, January 1994.

57. P. Lolgen,, A. Rohatgi, P. Sana, W.C. Sinke, A.W. Weeber, C. Leguijt, R.A. Steeman, and J.A. Eikelboom, "Al Treatment-Induced Improvement in Bulk Carrier Lifetime Measured Independently from Surface Effects," Proceedings of the 12th European Photovoltaic Solar Energy Conference:Proceedings of the International Conference, Amsterdam, The Netherlands, pp. 1778-1781, April 1994.

58. C. Leguijt, P. Lolgen, J.A. Eikelboom, A.S.H. van der Heide, R.A. Steeman, W.C. Sinke, P.M. Sarro, L.A. Verhoef, P.P. Michiels, Z. Chen, and A. Rohatgi, "Surface Passivation of Silicon by Low Temperature Processing," Proceedings of the 12th European Photovoltaic Solar Energy Conference: Proceedings of the International Conference, Amsterdam, The Netherlands, pp. 720-723, April 1994.

59. J.B. Lee, Z. Chen, M.G. Allen, and A.Rohatgi, "A Hybrid Micro System Using a High Voltage Solar Cell Array as a Power Supply", Proceedings International Symposium on Microelectronics ISHM 94, Boston PA, pp. 232-236, November 1994.

60. B.L. Sopori, X. Deng, J.P. Benner, A. Rohatgi, P.Sana, S. Estreicher, Y.K. Park, and M.A. Roberson, "Hydrogen in Silicon: Current Understanding of Diffusion and Passivation Mechanisms," Proceedings of 1994 IEEE First World Conference on
Photovoltaic Energy Conversion: Conference Record of the Twenty-Fourth IEEE
Photovoltaic Specialists Conference, Waikoloa, Hawaii, Vol. II, pp. 1615-1620, December 1994.

61. H.E. Elgamel, A. Rohatgi, Z. Chen, C. Vinckier, S. Sivoththaman, J. Poortmans, J. Nijs, and R. Mertens, "Optimal Surface and Bulk Passivation of High Efficiency Multicrystalline Silicon Solar Cells," Proceedings of 1994 IEEE First World Conference on Photovoltaic Energy Conversion: Conference Record of the Twenty-Fourth IEEE Photovoltaic Specialists Conference, Waikoloa, Hawaii, Vol. II, pp. 1323-1326, December 1994.

62. S. Narayanan, J. Creager, S. Roncin, A. Rohatgi, and Z. Chen, "Process Improvements for Large Area Polycrystalline Silicon Buried Contact Solar Cells Sequence," Proceedings of 1994 IEEE First World Conference on Photovoltaic Energy Conversion: Conference Record of the Twenty-Fourth IEEE Photovoltaic Specialists Conference, Waikoloa, Hawaii, Vol. II, pp. 1319-1322, December 1994.

63. Z. Chen, A.Rohatgi and D. Ruby, "Silicon Surface and Bulk Defect Passivation by Low Temperature PECVD Oxides and Nitrides," Proceedings of the 1994 IEEE First World Conference on Photovoltaic Energy Conversion: Conference Record of the Twenty-Fourth IEEE Photovoltaic Specialists Conference, Waikoloa, Hawaii , Vol. II, pp.1331-1334, December 1994.

64. P. Doshi, A.Rohatgi, M.Ropp, Z.Chen, D.Ruby, D.L. Meier, Rapid Thermal Processing of High Efficiency Silicon Solar Cells with Controlled In-Situ Annealing," Proceedings of 1994 IEEE First World Conference on Photovoltaic Energy Conversion: Conference Record of the Twenty-Fourth IEEE Photovoltaic Specialists Conference, Waikoloa, Hawaii, Vol. II, pp. 1299-1302, December 1994.

65. H.C. Chou, A. Rohatgi, N.M. Jokerst, S. Kamra, S.R. Stock, S.L. Lowrie, R.K. Ahrenkiel, and D.H.Levi, Approach Toward High Efficiency CdTe/CdS Heterojunction Solar Cells, submitted for publication in Proceedings of the 1994 International Conference on Electronic Material, Hsinchi, Taiwan, vol. 43, pp. 178-182, December 1994.

66. M.Begovic, A. Rohatgi, D. Nall, R. Long, Power Quality and Design of the Photovoltaic System at Georgia Tech Athletic Facility, Proceedings of the 4th International Conference on Power Quality, pp. 250-255. August 1995.

67. A.Rohatgi, P.Doshi, M.Ropp, L.Cai, A. Doolittle, S. Narasimha, T.Krygowski, J.Rand, D.Ruby, and D.L. Meir, Improved Understanding and Optimization of RTP and PECVD Processes for High Efficiency Silicon Solar Cells, Proceedings of the 13th
European Photovoltaic Solar Energy Conference and Exhibition, vol. I, pp. 413-416, Nice, France, October 1995.

68. M.Begovic, M.Ropp, A.Rohatgi, R.Long, Roof-Installed PV System on the Olympic Swimming Pool at Georgia Tech, Proceedings of the 13th European Photovoltaic Solar Energy Conference and Exhibition, vol. I, pp. 965-968, Nice, France, October 1995.

69. B. L. Sopori, M. Cuzdinovic, C.Khattak and A. Rohatgi, Characterization of HEM Multi-Crystalline Silicon Material for High Efficiency Solar Cells, Proceedings of 13th European Photovoltaic Solar Energy Conference and Exhibition, pp. 320-326, October, 1995.

70. R. Long, A. Rohatgi, M. Begovic, Photovoltaics in Architecture, The Design, Construction and Monitoring of a Photovoltaic Power System on the Georgia Institute of Technology Aquatic Center, Proceedings of the 13th European Photovoltaic Solar Energy Conference and Exhibition, vol. I, pp. 675-678, Nice, France, October, 1995.

71. P.Doshi, J.Mejia, K.Tate, S.Kamra, A.Rohatgi, S.Narayanan, and R.Singh, High Efficiency silicon solar Cells by Low Cost Rapid-Thermal Processing Screen Printing and Plasma Enhanced Chemical Vapor Deposition,” Proceedings of the 25th IEEE Photovoltaic Specialists Conference, pp.421-424, Washington D.C., May 1996.

72. T.Krygowski, P.Sana, and A.Rohatgi, A Novel Technology for the Simultaneous Diffusion of Boron and Phosphorus In Silicon, Proceedings of the 25th IEEE Photovoltaic Specialists Conference,, pp. 393-396, Washington D.C. May 1996.

73. S.Narasimha, S.Kamra,A.Rohatgi and C.P.Khattak The Optimization and Fabrication of High-Efficiency HEM Multicrystalline Silicon Solar Cells, Proceedings of the 25th IEEE Photovoltaic Specialists Conference, pp. 449-452, Washington D.C., May 1996.

74. A. Rohatgi, S. Narasimha, S. Kamra, P. Doshi, C.P. Khattak, K. Emery and H. Field Record High 18.6% Efficient Solar Cell on HEM Multicrystalline Material, Proceedings of the 25th IEEE Photovoltaic Specialists Conference, pp. 741-744, Washington D.C., May 1996

75. A.X.Coles, R.A.Gebhardt and A. Rohatgi, Optimization of Porous Silicon Reflectance for Solar Cell Applications, Proceedings of the Materials Research Society, pp. 1210-1215, Washington D.C., April, 1996.

76. R. Wallace, J.I. Hanoka, A. Rohatgi and G. Crotty, Thin Silicon String Ribbon, Proceedings of the 9th International PV Science and Engineering Conference, Miyazaki, Japan, pp. 83-84, November 1996.

77. R.Singh, A. Rohatgi, and D. Ratokonda, Role of Rapid Isothermal Processing in the Manufacturing of Bulk and Thin Film Solar Cells and Other Large Area Devices,
Proceedings of the 4th International Conference on Advanced Thermal Processing of Semiconductors RTP 96, Idaho, pp. 296-299, 1996.

78. S. Han, L.Cai, G. May, and A. Rohatgi, Optimizing the Growth of PECVD Silicon Nitride Films for Solar Cells Applications Using Neural Networks and Genetic Algorithms, Artificial Neural Networks in Engineering, vol. 6, pp. 343-349, St. Louis, Missouri, November 1996.

79. S. Han, L.Cai, G.May and A.Rohatgi, Modelling and Optimization of PECVD Silicon Nitride Using Neural Networks and Genetic Algorithms, 190th Meeting of the Electrochemical Society, pp.1166, San Antonio, Texas, October, 1996.

80. A. Rohatgi, and S. Narasimha, Design, Fabrication, and Analysis of Greater than 18% Efficient Multicrystalline Silicon Cells, 9th International Photovoltaic Science and Engineering Conference, pp. 85-88, Miyazaki, Japan, November 1996.

81. M. Begovic, M. Ropp, and A.Rohatgi, “Roof-Installed Photovoltaic System at Georgia Tech Olympic Aquatic Center,” Tesla the Third Millenium, Belgrade, Yugoslavia, October 14-17, 1996.

82. R.L. Wallace, J.I. Hanoka, S. Narasimha, S. Kamra, and A. Rohatgi “String Ribbon - Acrystal Growth Method to Make High Efficiency, 100 um Silicon Solar Cells,” 14th European Photovoltaic Solar Energy Conference and Exhibition, vol. I, pp. 171-174, Barcelona, Spain, June 30 - July 4, 1997.

83. M. Ropp, M. Begovic, and A. Rohatgi, “Performance Evaluation of the Georgia Tech Aquatic Center Photovoltaic Array,” 14th European Photovoltaic Solar Energy Conference and Exhibition, vol. I, pp.374-379, Barcelona, Spain, June 30 - July 4, 1997.

84. A. Rohatgi, P. Doshi, and S. Kamra, “Highest Efficiency RTP Silicon Solar Cells by Rapid Thermal Diffusion and Oxidation,” 14th European Photovoltaic Solar Energy Conference and Exhibition, vol. I, pp. 660-665, Barcelona (Catalunya), Spain, June, 1997.

85. R. Singh, R. Sharangpani, K.C. Cherukuri, Y.Chen, D.M. Dawson, K.F. Poole, A. Rohatgi, S.Narayanan and R.P.S. Thakur, “How Rapid Isothermal Processing Can Be A Dominant Semiconductor Processing Technology In The 21st Century,” Material Research Society, vol 429, pp. 81-94, San Francisco, CA, April, 1996.

86. M. Begovic, M. Ropp, A. Rohatgi, S. Durand and A. Rosenthal, “Monitoring and Data Acquisition For A Large Roof-Mounted Photovoltaic Array,” Proceedings of the IEEE Region 3 Conference (SECON 97), pp.-297-300, Blacksburg, Virginia, April 1997.

87. T.F. Ciszek, T.H. Wang, W.A. Doolittle and A. Rohatgi, “Minority-Carrier Lifetime Degradation in Silicon Co-Doped with Iron and Gallium,” Proceedings of the 26th IEEE Photovoltaic Specialists Conference, pp. 59-62, Anaheim, California, September, 1997.

88. R.F.Wallace, J.I. Hanoka, S. Narasimha, S. Kamra and A. Rohatgi, “Thin Silicon Ribbon for High Efficiency Polycrystalline Solar Cells,” Proceedings of the 26th IEEE Photovoltaic Specialists Conference, pp. 99-102, Anaheim, California, September, 1997.

89. S. Narasimha, G. Crotty, T. Krygowski, A. Rohatgi and D.L. Meier, “Back Surface Field and Emitter Passivation Effects in the Record High Efficiency N-Type Dendritic Web Silicon Solar Cell,” Proceedings of the 26th IEEE Photovoltaic Specialists Conference, pp. 235-238, Anaheim, California, September, 1997.

90. T. Krygowski and A. Rohatgi, “Simultaneous P and B Diffusion, In-Situ Surface Passivation, Impurity Filtering and Gettering for High-Efficiency Silicon Solar Cells,” Proceedings of the 26th IEEE Photovoltaic Specialists Conference, pp. 19-24, Anaheim, California, September, 1997.

91. S. Narasimha and A. Rohatgi, “Optimized Aluminum Back Surface Field Techniques for Silicon Solar Cells,” Proceedings of the 26th IEEE Photovoltaic Specialists Conference, pp. 63-66, Anaheim, California, September, 1997.

92. P. Doshi, J. Moschner, J. Jeong, A. Rohatgi, R. Singh and S. Narayanan, “Characterization and Application of Rapid Thermal Oxide surface Passivation for the Highest Efficiency RTP Silicon Solar Cells,” Proceedings of the 26th IEEE Photovoltaic Specialists Conference, pp. 87-90, Anaheim, California, September, 1997.

93. M.E. Ropp, M. Begovic and A. Rohatgi, “Determination of the Curvature Derating Factor for the Georgia Tech Aquatic Center Photovoltaic Array,” Proceedings of the 26th IEEE Photovoltaic Specialists Conference, pp. 1297-1300, Anaheim, California, September, 1997.

94. W.A. Doolittle, A. Rohatgi, R. Ahrenkiel, D. Levi, G. Augustine and R.H. Hopkins, “Understanding the Role of Defects in Limiting the Minority Carrier Lifetime in SiC,” Proceedings of the Materials Research Society Semiconductor Materials and Devices Symposium, pp. 197-202, Boston, MA, December, 1997.

95. K. Li, Z.C.Feng, A.T.S. Wee, H.C. Chou, J.Y. Lin, S. Kamra, K.L. Tan, A. Rohatgi, L. Zhou and S.F,Y. Li, “Several Efficiency Influencing Factors in CdTe/CdS Solar
Cells,” Proceedings of the Fall Material Research Conference, Boston, MA, December, 1997.

96. J. Moschner, P. Doshi, D.S. Ruby, T. Lauinger, A.G. Aberle and A. Rohatgi, “Comparison of Front and Back Surface Passivation Schemes for Silicon Solar Cells,” Proceedings of the 2nd World Conference and Exhibition on Photovoltaic Solar Energy Conversion, pp. 1214-1219, Hofburg Kongresszentrum, Wien, Austria, July, 1998.

97. M. Begovic, M. Ropp, and A. Rohatgi, “Determining the Likelihood of Islanding of PV Systems by Modelling and Statistical Analysis, Proceedings of the 2nd World Conference and Exhibition on Photovoltaic Solar Energy Conversion,” pp. 1310-1315, Hofburg Kongresszentrum, Wien, Austria, July, 1998.

98. D.L. Meier, H.P. Davis, P.D. Meier, A.Shibata, B.J. Meier, T.Abe, K.Kinoshita, C. Bishop, S.Mahajan, A.Rohatgi, P.Doshi, and M. Finnegan, “Self-Doping Contacts and Associated Silicon Solar Cell Structures,” Proceedings of the 2nd World Conference and Exhibition on Photovoltaic Solar Energy Conversion, pp. 1320-1325, Hofburg Kongresszentrum, Wien, Austria, July 6-10, 1998.

99. A. Rohatgi and S. Narasimha, “Effective Passivation of the Low Resistivity Silicon Surface by a Rapid Thermal Oxide/PECVD Silicon Nitride Stack and its Application to Passivated Rear and Bifacial Si Solar Cells,” Proceedings of the 2nd World Conference and Exhibition on Photovoltaic Solar Energy Conversion, Hofburg Kongresszentrum, Wien, Austria, July 6-10, 1998.

100. G. Augustine, H. McD. Hobgood, V. Balakrishna, G.T. Dunne, R.H. Hopkins, R.N. Thomas, W.A. Doolittle and A. Rohatgi, “High Purity and Semi-Insulating 4H-SiC Crystals Grown by Physical Vapor Transport,” Proceedings of the Materials Science Forum, vols. 264-268, pp. 9-12, Switerzerland, 1998.

101. A. Rohatgi, P. Doshi, A. Ebong, S. Narasimha, T. Krygowski and J. Moschner, “Rapid Processing of Low-Cost, High-Efficiency Silicon Solar Cells,” Proceedings of the IUMRS-ICA International Conference in Asia, vol. 22, no.#3, pp. 383-390, May 1999.

102. A. Ebong, J. Brody, A. Rohatgi and T. Williams, “Optimization of Front Metal Contact Firing Scheme to Achieve High Fill Factors on Screen Printed Silicon Solar Cells,” In Technical Digest, 9th International Photovoltaic Science and Engineering Conference,
pp. 765-766, September, 1999.

103. D.L. Meier, H. P. Davis, R. A. Garcia, J. Salami, A. Rohatgi, A. Ebong, P. Doshi and M. Finnegan, “Aluminum Alloy Back-p-n Junction Dendritic Web Silicon Solar Cell,” Proceedings of the 11th International Photvoltaic Science and Engineering Conference (PVSEC-11), pp. 765-766, September, 1999.

104. A. Rohatgi, “Rapid Thermal Processing of High Performance Dielectrics and Silicon Solar Cells,” Symposium on Advances in Rapid Thermal Processing, dielectrics Science and Technology Society Proceedings, vol. 99-10, pp. 265-276, Seattle, Washington, May, 1999.

105. H.A. Atwater, B. Sopori, T. Ciszek, L.C. Feldman, J. Gee, A. Rohatgi, “Research Opportunities in Crystalline Silicon Photovoltaics for the 21st Century, Seattle, Washington, May, 3-6, 1999.

106. R. Singh, A. Rohatgi, K. Rajan, S. Venkataraman, and K.F. Poole, “Rapid Thermal Processing as a Photovoltaic Manufacturing Technology for the 21st Century,” Proceeding of the ECS Symposium, PV for the 21st Century, vol. 99-11, pp. 33-47, Seattle, Washington,
May 3 - 6, 1999.

107. T. Saitoih, H. Hashigami, X. Wang, T. Abe, T. Igarshi, S. Glunz, S. Rein, W. Wettling, A. Ebong, B.M. Damiani, A. Rohatgi, I. Yamasaki, T. Nunoi, H. Sawai, H. Ohtuka, T. Warabisako, J. Zhao, M. Green, J. Schmidt, A. Cuevas, A. Metz and R. Hezel, “Suppresion of Light-Induced Degradation of Minority-Carrier Lifetimes in Low-Resistivity CZ Silicon Wafers and Solar Cells, Proceedings of the 16th European Photovoltaic Solar Energy Conference and Exhibition,” vol. 2, pp.1423-1428, Glasgow, United Kingdom, May, 2000.

108. A. Rohatgi, A. Ebong, V. Yelundur and A. Ristow, “Rapid Thermal Processing of Next Generation Silicon Solar Cells”, Proceedings of the 10th International Workshop on the Physics of Semiconductor Devices, vol. 1, pp. 73-80, New Delhi, India, December 14-18, 2001.

109. A. Ebong, M. Hillali and A. Rohatgi, “Rapid Photo-Assisted Forming Gas Anneal (FGA) for High Quality Screen-Printed Contacts for Silicon Solar Cells,” Proceedings of the 28th IEEE PVSC, pp. 264-267, Anchorage, Alaska, September 15-22, 2000.

110. M. Begovic, A. Pregelij, and A. Rohatgi, “Four-Year Performance Assessment of the 342 KW PV System at Georgia Tech,” Proceedings of the 28th IEEE PVSC, pp. 1575-1578, Anchorage, Alaska, September 15-22, 2000.

111. A. Rohatgi, V. Yelundur, J. Jeong, A. Ebong, D. Meier, A.M. Gabor, and M. Rosenblum, “Aluminum Enhanced PECVD SiNx Hydrogenation in Silicon Ribbons,” Proceedings of the 16th European Photovoltaic Solar Energy Conference and Exhibition, vol. 2, pp. 1120-1123, Glasgow, United Kingdom, May 1-5, 2000.

112. V. Yelundur, A. Rohatgi, A.M. Gabor, J. I. Hanoka, and R.L. Wallace “PECVD SiNx Induced Defect Passivation in String Ribbon,” Proceedings of the 28th IEEE Photovoltaic Specialists Conference, pp. 91-94, Anchorage, Alaska, September 15-22, 2000.

113. R. Ludemann, B.M. Damiani, A. Rohatgi, “Novel Processing of Solar Cells with Porous Silicon Texturing,” Proceedings of the 28th IEEE Photovoltaic Specialists Conference,
pp. 299-301, Anchorage, Alaska, September 15-22, 2000.

114. B.M. Damiani, R. Ludemann, D.S. Ruby, S.H. Zaidi, A. Rohatgi, “Development of RIE-Textured Silicon Solar Cells,” Proceedings of the 28th IEEE Photovoltaic Specialists Conference, pp. 371-374, Anchorage, Alaska, September 15-22, 2000.

115. D. S. Ruby, S.H. Zaidi, B.M. Damiani, and A. Rohatgi, “RIE-Texturing of Multicrystalline Silicon Solar Cells,” Proceedings of the 12th International PVSEC Conference, vol. 74, pp. 133-137, Cheju Island, Korea, June 11-15, 2001.

116. J. Jeong, A. Rohatgi, M. Rosenblum and J. Kalejs, “Lifetime Enhancement in EFG Multicrystalline Silicon,” Proceedings of the 28th IEEE Photovoltaic Specialists Conference, pp. 83-86, Anchorage, Alaska, September 15-22, 2000.

117. A. Ebong, Y.H. Cho, M. Hilali, A. Rohatgi and D. Ruby, “Rapid Thermal Technologies for High Efficiency Silicon Solar Cells,” Proceedings of the 12th International PVSEC Conference, vol. 74, pp. 51-55, Cheju Island, Korea, June 11-15, 2001.

118. A. Rohatgi, V. Yelundur, J. Jeong, A. Ebong, M.D. Rosenblum, R.L. Wallace, “Fundamental Understanding and Implementation of Al-Enhanced PECVD SiNx Hydrogenation in Silicon Ribbons,” Proceedings of the 12th International PVSEC Conference, vol. 74, pp. 117-126, Cheju Island, Korea, June 11-15, 2001.

119. M. Begovic, A. Pregelj, A. Rohatgi, and D. Novesel, “Impact of Renewable Distributed Generation on Power Systems,” Proceedings of the 34th Hawaii International Conference on System Sciences, 2001.

120. M. Begovic, A. Pregelj, and A. Rohatgi, “On Impact of Distributed Generation on Feeder Operation,” Proceedings of the 32nd North American Power Symposium (NAPS), Waterloo, 2000.

121. A. Rohatgi, A. Ebong, M. Hilali, C. Honsberg and D. L. Meier, “High Efficiency Self-aligned Self-Doping Selective Emitter Screen-Printed Silicon Solar Cells,” Proceedings of the 17th European Photovoltaic Solar Energy Conference and Exhibition, vol. 1, Munich, Germany, October 22-26 2001.

122. A. Ristow, A. Ebong, M. Hilali and A. Rohatgi, “Screen-Printed Back Surface Reflector for Light Trapping in Crystalline Silicon Solar Cells,” Proceedings of the 17th European Photovoltaic Solar Energy Conference and Exhibition, pp.1335-1338, Munich, Germany, October 22-26, 2001.

123. M. Begovic, A. Pregelj, and A. Rohatgi, “Estimation of PV System Reliability Parameters,” Proceedings of the 17th European Photovoltaic Solar Energy Conference and Exhibition, pp.558-561, Munich, Germany, October 22-26, 2001.

124. S. Bowden and A. Rohatgi, “Rapid and Accurate Determination of Series Resistance and Fill Factor Losses in Industrial Silicon Solar Cells,” Proceedings of the 17th European Photovoltaic Solar Energy Conference and Exhibition, vol. 2, pp. 1802-1806, Munich, Germany, October 22-26, 2001.

125. M. Begovic, A. Rohatgi, A. Pregelj and C. Honsberg “Green Pricing” of Electric Power: Status and Perspectives, submitted for publication IEEE proceedings

126. A. Rohatgi, V. Yelundur, J. Jeong, A. Ristow, M. Hilali, and B. Damiani “Recent Advances and Approach Toward Low-Cost High-Efficiency Multicrystalline Silicon
Solar Cells,” Proceedings of the 11th International Workshop on Physics of Semiconductor Devices, vol.1, pp. 73-80, New Delhi, India, December 2001.

127. A. Rohatgi, M. Hilali, D.L. Meier, A. Ebong, C. Honsberg, A.F. Carroll and P. Hacke, “Self-Aligned Self-Doping Selective Emitter for Screen-Printed Silicon Solar Cells,” Proceedings of the 17th European Solar Energy Conference, vol 2, pp. 1307-1310, Munich, Germany, 2001.

128. J. Brody and A. Rohatgi, “Comparison of Dielectric Surface Passivation of Monocrystalline and Multicrystalline Silicon,” Proceedings of the 29th IEEE Photovoltaic Specialists Conference, New Orleans, Louisiana, May 20-24, 2002.

129. B. Damiani, M. Hilali, and A. Rohatgi, “Light Induced Degradation in Czochralski Silicon During Illuminated High Temperature Processing,” Proceedings of the 29th IEEE Photovoltaic Specialists Conference, New Orleans, Louisiana, May 20-24, 2002.

130. M. Hilali, J.W. Jeong, A. Rohatgi, D.L. Meier and A.F. Carroll, “Optimization of Self-Doping Ag Paste Firing to Achieve High Fill Factors on Screen-Printed Silicon Solar Cells with 100W/sq. Emitter,” Proceedings of the 29th IEEE Photovoltaics Specialists Conference,
New Orleans, Louisiana, May 20-24, 2002.

131. J.W. Jeong, Y.H. Cho, A. Rohatgi, M.D. Rosenblum, B.R. Bathey, J.P. Kalejs, “Rapid Thermal Processing for PECVD SiN-Induced Hydrogenation of High-Efficiency EFG Silicon Solar Cells,” Proceedings of the 29th IEEE Photovoltaics Specialists Conference,
New Orleans, Louisiana, May 20-24, 2002.

132. A. Ristow and A. Rohatgi, “Design Rules for the Reduction of the Influence of Material Quality on the Performance of Crystalline Silicon Solar Cells,” Proceedings of the 29th IEEE Photovoltaics Specialists Conference, New Orleans, Louisiana, May 20-24, 2002.

133. S. Bowden, V. Yelundur and A. Rohatgi, “Implied Voc and Suns Voc Measurements in Multicrystalline Solar Cells,” Proceedings of the 29th IEEE Photovoltaic Specialists Conference, New Orleans, Louisiana, May 20-24, 2002.

134. A. Pregelj, M. Begovic, A. Rohatgi, “Impact of Inverter Configuration on PV System Reliability and Energy Production,” Proceedings of the 29th IEEE Photovoltaic Specialists Conference, New Orleans, Louisiana, May 20-24, 2002.

135. S. Bowden, D.S. Kim, C. Honsberg, and A. Rohatgi, “Rapid Thermal Processing For Front And Rear Contact Passivation,” Proceedings of the 29th IEEE Photovoltaic Specialists Conference, New Orleans, Louisiana, May 20-24, 2002.

136. T. Saitoh, X. Wang, H. Hashigami, T. Abe, T. Igarashi, S. Glunz, W. Wettling, A. Ebong, B. Damiani and A. Rohatgi, “Research and Development of Stabilized High-Efficiency CA Si Solar Cells,” Proceedings of the 11th PVSEC, Sapporo, Japan 1999.

137. R. Ludemann, G. Willeke, B.M. Damiani and A. Rohatgi, “Silicon Solar Cells with Black Silicon Texturization,” Proceeding of the 7th European Solar Energy Conference, vol. 2, pp. 1327-1330, Munich, Germany, 2001.

138. A. Rohatgi, V. Yelundur, J.W. Jeong, M. Hilali and D.S. Kim, “Rapid Thermal Processing Enhanced Hydrogenation and Screen-Printed Contacts in Silicon Ribbon Solar Cells,” Proceedings of the National Center for Photovoltaics and Solar Program Review , Denver, Colorado, March 24-26, 2003.

139. V. Meemongkolkiat, M. Hilali and A. Rohatgi, “Investigation of RTP and Belt Fired Screen Printed Al-BSF on Textured and Planar Back Surfaces of Silicon Solar Cells,” Proceedings of the 3rd World Conference on Photovoltaic Energy Conversion, Volume B, pp. 1467-1470, May 11-18, 2003, Osaka, Japan.

140. D.S. Kim, A.M. Gabor, V. Yelundur, A.D. Upadhyaya, V. Meemongkolkiat and A. Rohatgi, “String Ribbon Silicon Solar Cells with 17.8% Efficiency,” Proceedings of the 3rd World Conference on Photovoltaic Energy Conversion, Volume B, pp. 1293-1296,May 11-18, 2003, Osaka, Japan.

141. A. Rohatgi, V. Yelundur, J-W. Jeong, D.S. Kim and A.M. Gabor, “Implementation of Rapid Therman Processing to Achieve Greater than 15% Efficient Screen-Printed Ribbon Silicon Solar Cells,” Proceedings of the 3rd World Conference on Photovoltaic Energy Conversion, Volume B, pp 1352-1355, May 11-18, 2003, Osaka, Japan.

142. B. Damiani, K. Nakayashiki, D.S. Kim, V. Yelundur, S. Ostapenko, I. Tarasov and A. Rohatgi, “Light Induced Degradation In Promising Multi-Crystalline Silicon Materials for Solar Cell Fabrication,” Proceedings of the 3rd World Conference on Photovoltaic Energy Conversion, Volume A, pp. 927-930, May 11-18, 2003, Osaka, Japan.

143. A. Rohatgi, “Road to Cost-Effective Crystalline Silicon Photovoltaics,” Proceedings of the 3rd World Conference on Photovoltaic Energy Conversion, Volume A, pp 829-834, May 11-18, 2003, Osaka, Japan.

144. A. Rohatgi, A. Ristow and V. Yelundur, “Cost and Technology Roadmaps for Cost-Effective Silicon Photovoltaics,” Proceedings of 12th International Workshop on the Physics of Semiconductor Devices (IWPSD-2003), vol. 2, pp. 893-898, December 16-20, 2003, New Delhi, India.

145. V. Yelundur, A. Rohatgi and J.I Hanoka, “Beneficial Impact of Low-Frequency PECVD SiNx:H-induced Hydrogenation in High-Efficiency String Ribbon Silicon Solar Cells,” Proceedings of the 19th European Photovoltaic Solar Energy Conference and Exhibition, June 7-11, 2004, Paris, France.

146. M. Hilali, A. Rohatgi, C. Kahadilkar, S. Kim, T. Pham, J. Salami, A. Shaikh and S. Sridharan, “Development of Thick-Film Ag Paste to Achieve High Fill Factor in Screen-Printed Si Solar Cells with Low-and High-Sheet Resistance Emitter,” Proceedings of the 19th European Photovoltaic Solar Energy Conference and Exhibition, June 7-11, 2004, Paris, France.

147. A. Upadhyaya, M. Sheoran, A. Rohatgi and K. Matthei, “Record High Efficiency Screen-Printed Belt Co-Fired Cells on Cast Multicrystalline Silicon,” Proceeding of the 19th European Photovoltaic Solar Energy Conference and Exhibition, June 7-11, 2004, Paris, France.

148. K. Nakayashiki, D. S. Kim, A. Rohatgi, B. R. Bathey, “Understanding of the RTP-assisted Reduction of Hydrogen Dissociation from Defects in EFG Si,” Proceedings of 14th International Phtovoltaic Science and Engineering Conference, January 26-30, 2004, Chulalongkorn University, Bangkok, Thailand.

149. V. Meemongkolkiat, M. Hilali, K. Nakayashiki, and A. Rohatgi, “Process and Material Dependence of Al-BSF in Crystalline Si Solar Cells,” Proceedings of 14th International Phtovoltaic Science and Engineering Conference, January 26-30, 2004, Chulalongkorn University, Bangkok, Thailand.

150. J. Brody, P. Geiger, G. Hahn and A. Rohatgi, “Comparison of Dielectrics and Iodine Solution for Monocrystalline and Multicrystalline Surface Passivation,” Proceedings of the 3rd World Conference on Photovoltaic Energy Conversion, Volume B, pp 1490-1492, May 11-18, 2003, Osaka, Japan.

151. M. Stavola, Fan Jiang, A. Rohatgi, D. Kim, J. Holt, H. Atwater and J. Kalejs, “Hydrogenation of Si From SiNx:H Films: How Much Hydrogen is Really in the Silicon?,” Proceedings of the 3rd World Conference on Photovoltaic Energy Conversion, Volume A, pp 909-912, May 11-18, 2003, Osaka, Japan.

152. A. Rohatgi, D. S. Kim, V. Yelundur, K. Nakayashiki, A. Upadhyaya, M. Hilali, V. Meemongkolat, “Record-High-Efficiency Solar Cells on Multicrystalline Materials Through Understanding and Implementation of RTP-enhanced SiNx-induced Defect Hydrogenation,” Proceedings of 14th International Phtovoltaic Science and Engineering Conference, January 26-30, 2004, Chulalongkorn University, Bangkok, Thailand.
153.     A. Ristow, M. Begovic and A. Rohatgi, “Numerical Approach to Uncertainty and Sensitivity Analysis in Forecasting the Manufacturing Cost and Performance of PV Modules,” Proceedings of the 19^th European Photovoltaic Solar Energy Conference and Exhibition, June 7-11, 2004, Paris, France.

154.     M. Hilali, A. Rohatgi, C. Kahadilkar, S.Kin, T. Pham, J. Salami, A. Shaikh and S. Sridharan, “Understanding and Development of AG Pastes for Silicon Solar Cells with High Sheet-Resistance Emitters”, Proceedings of the 19^th European Photovoltaic Solar Energy Conference and Exhibition, June 7-11, 2004, Paris, France.

155.     J. M. Gee, P. Hacke, M. Sumner, R. Schmit and A. Rohatgi, “Towards a Manufacturable Back-Contact Emitter-Wrap-Through Silicon Solar Cell,” Proceedings of the 31^st IEEE Photovoltaic Specialists Conference, January 3-7, 2005, Orlando, Florida.

156.     T.H. Wang, M.R. Page, E. Iwaniczko, Q. Wang, D.H. Levi, Y. Yan, C.W. Teplin, V.Yelundur, A. Rohatgi and H.M. Branz, “Effective Interfaces in Silicon Heterojunction Solar Cells,” Proceedings of the 31^st IEEE Photovoltaic Specialists Conference, January 3-7, pp. 955-958, 2005, Orlando, Florida.

157.     M. Hilali, K. Nakayashiki and A. Rohatgi, “A Study of Screen-Printed Textured Cells with High Sheet-Resistance Emitter,” Proceedings of the 31^st IEEE Photovoltaic Specialists Conference, January 3-7, 2005, Orlando, Florida.

158.     G. Crabtree, T. Jester, C. Fredric, J. Nickerson, V. Meemongkolkiat and A. Rohatgi, “Production Viability of Gallium Doped Mono-Crystalline Solar Cells,” Proceedings of the 31^st IEEE Photovoltaic Specialists Conference, January 3-7, 2005, pp, 935-938, Orlando, Florida.

159.     K. Nakayashiki, A. Rohatgi, I. Tarasov, S. Ostapenko, L. Gedvilas, B. Keyes, B.R. Bathey and J.P. Kalejs, “Investigation of Spatially Non-Uniform Defect Passivation in EFG Si by Scanning Photoluminescence Technique,” Proceedings of the 31^st IEEE Photovoltaic Specialists Conference, pp. 1265-1268, January 3-7, 2005, Orlando, Florida.

160.     A. Ebong, M. Hilali, V. Upadhyaya, B. Rounsaville, I.Ebong and A. Rohatgi, “High Efficiency Screen-Printed Planar Solar Cells on Single Crystalline Silicon Materials,” Proceedings of the 31^st IEEE Photovoltaic Specialists Conference, January 3-7, 2005, Orlando, Florida.

161.     M.Hilali, K. Nakayashiki, A. Ebong and A. Rohatgi, “Investigation of High-Efficiency Screen-Printed Textured Si Solar Cells with High Sheet-Resistance Emitters,” Proceedings of the 31^st IEEE Photovoltaic Specialists Conference, pp. 1185-1188, January 3-7, 2005, Orlando, Florida.

162.     V. Meemongkolkiat, K. Nakayashiki, A. Rohatgi, G. Crabtree, J. Nickerson and T.L. Jester, “The Effect of The Variation in Resistivity and Lifetime on the Solar Cells Performance Along the Commercially Grown GA- and B-Doped Czochralski Ingots,” Proceedings of the 31^st IEEE Photovoltaic Specialists Conference,pp. 1115-1118, January 3-7, 2005, Orlando, Florida.

163.     A. Upadhyaya, M. Sheoran and A. Rohatgi, “Study of Direct PECVD SiNx-Induced Surface Emitter and Bulk Defect Passivation in P-Type Silicon Solar Cells,” Proceedings of the 31^st IEEE Photovoltaic Specialists Conference,   pp. 1273-1276, January 3-7, 2005, Orlando, Florida.

164.     V. Meemongkolkiat, K. Nakayashiki, D.S. Kim, S. Kim, A. Shaikh and A. Rohatgi, “Investigation of Modified Screen-Printing Al pastes for Local Back Surface Field Formation,” Proceedings of the 4^th IEEE World Conference on Photovoltaic Energy Conversion, May 7-12, 2006, Waikoloa, Hawaii.

165.     M. Sheoran, A.Upadhyaya, D.S. Kim and A. Rohatgi, “Investigation of the Effect of Resistivity and Thickness on the Performance of Cast Multicrystalline Silicon Solar Cells,” Proceedings of the 4^th IEEE World Conference on Photovoltaic Energy Conversion, May 7-12, 2006, Waikoloa, Hawaii.

166.     D.S.Kim, V. Meemongkolkiat, A. Ebong, B. Rounsaville, V. Upadhyaya, A.Das and A. Rohatgi, “2D-Modeling and Development of Interdigitated Back Contact Solar Cells on Low-Cost Substrates,” Proceedings of the 4^th IEEE World Conference on Photovoltaic Energy Conversion, May 7-12, 2006, Waikoloa, Hawaii.

167.     A. Upadhyaya, M. Sheoran, A. Ristow and A. Rohatgi, “Greater Than 16% Efficient Screen Printed Solar Cells on 115-170 um Thick Cast Multicrystalline Silicon,” Proceedings of the 4^th IEEE World Conference on Photovoltaic Energy Conversion, May 7-12, 2006, Waikoloa, Hawaii.

168.     A. Ebong, V. Upadhyaya, B. Rounsaville, D.S. Kim, K. Tate and A. Rohatgi, “18% Large Area Screen-Printed Solar Cells on Textured MCz Silicon with High Sheet Resistance Emitter,” Proceedings of the 4^th IEEE World Conference on Photovoltaic Energy Conversion, May 7-12, 2006, Waikoloa, Hawaii.

169.     A. Ebong, V. Upadhyaya, B. Rounsaville, D.S. Kim and A. Rohatgi, “Rapid Thermal Processing of High Efficiency N-Type Silicon Solar Cells with Al Back Junction” Proceedings of the 4^th IEEE World Conference on Photovoltaic Energy Conversion, May 7-12, 2006, Waikoloa, Hawaii.

170.     A. Rohatgi, M. Hilali, A. Ristow, V. Meemongkolkiat, A. Upadhyaya, K. Nakayashiki, V. Yelundur and A. Ebong, “Opportunities and Challenges in Crystalline Silicon Photovoltaics,”   International Workshop on The Physics of Semiconductor Devices, December 13-17, 2005, New Delhi, India.

171.     A. Ristow, M. Begovic and A. Rohatgi, “Modeling the Effects of Uncertainty and Reliability on the Cost of Energy from PV Systems,” Proceedings of the 20^th European Photovoltaic Solar Energy Conference and Exhibition, pp 4317-4321, June 6-10, 2005.

172.     A. Ebong, V. Yelundur, V. Upadhyaya, B. Rounsaville, A. Upadhyaya, K. Tate, A. Rohatgi and J. Kalejs, “A Comprehensive Study of the Performance of Silicon Screen-Printed Solar Cells Fabricated with Belt Furnace Emitters,” Proceedings of the 20^th European Photovoltaic Solar Energy Conference and Exhibition, June 6-10, 2005.

173.     V. Yelundur, K. Nakaayashiki, A. Rohatgi, G. Crabtree, J. Nickerson and T.L. Jester, “The Effect of the Variation in Resistivity and Lifetime on the Solar Cells Performance Along the Commercially Grown Ga- and B-Doped Czochralski Ingots,” Proceedings of the 31^st IEEE Photovoltaic Specialists Conference, Lake Buena Vista, Florida, 2005, pp. 1115-1118.

174.     V. Yelundur, K. Nakayashiki, M. Hilali and A. Rohatgi, “Implementation of a Homogeneous High-Sheet-Resistance Emitter in Multicrystalline Silicon Solar Cells”, 31^st IEEE Photovoltaic Specialists Conference, pp. 959-962, 2005 (oral).

175.     A. Rohatgi, A. Ebong, M. Hilali, V. Meemongkolkiat, B. Rounsaville and A. Ristow, “High-Efficiency Screen-Printed Solar Cells on Textured Monocrystalline Silicon”, Proceedings of the 15^th International Photovoltaic Science and Engineering Conference, pp. 517-520, 2005.

Papers in Conference Proceedings (non-refereed)
R. Sudharsanan, S. Perkowitz, and A. Rohatgi, "Characterization of Thin CdMnTe Films by Infrared Spectroscopy" (Abstract), Bulletin of the American Physical Society, vol. 33, pg. 398, 1988.
2. R. Sudharsanan, K. T. Pollard, A. Erbil, and A. Rohatgi, "MOCVD Growth of CdTe and CdMnTe Films for Photovoltaic Applications," Fourth Biannual Workshop on Organometallic Vapor Phase Epitaxy, Monterey, California, pp. 8﷓11,1989.

3. A. Rohatgi, "Effect of Oxygen on Silicon Solar Cells," Sunshine Workshop Science and Engineering Conference, pp. 73﷓76, Kyoto, Japan, November 1990.

4. A. Rohatgi, "High Efficiency Polycrystalline Silicon Solar Cells", Proceedings of the 4th Sunshine Workshop on Crystalline Silicon Solar Cells, pp. 67﷓75, Chiba, Japan, November 1992.

5. A. Rohatgi, P. Sana, Z. Chen, J. Salami, and G.Crotty, "Silicon Photovoltaic Research at Georgia Tech," Proceedings of the Sixth Sunshine Workshop on Crystalline Silicon Solar Cells, pp. 35-54, Tokyo, Japan, November 1993.

6. Z.C. Feng, A. Rohatgi, A.T.S. Wee, Z.C. Feng, H.C. Chou, S. Kamra and A. Rohatgi, Optical and Surface Analysis of Bulk 6H-SiC Single Crystalline Wafers, Bull Am. Physics. Soc. Vol. 40, No. 1, pp.219, 1995.

7. S.Narasimha, J. Mejia, and A. Rohatgi, Screen Printed Aluminum Back Surface Fields for Silicon Solar Cells, Sixth Workshop on the Role of Impurities and Defects in Silicon Device Processing, Snow Mass, Colorado, August 12-14, 1996.

8. T.Krygowski, and A. Rohatgi, A Simultaneous Front and Back Diffusion Technique for the Low Cost Production of High Efficiency Silicon Solar Cells, Sixth Workshop on the Role of Impurities and Defects in Silicon Device Processing, Snow Mass, Colorado, August 12-14, 1996.

9. A. Rohatgi and S. Narasimha, “High-Efficiency Cell Fabrication on Low-Defect Density Materials,” Sixth Workshop on the Role of Impurities and Defects in Silicon Device Processing, Snow Mass, Colorado, August 12-14, 1996.

10. A. Rohatgi, S. Narasimha and L. Cai, “Gettering and Passivation of High Efficiency Multicrystalline Silicon Solar Cells,” accepted for publication American Institute of Physics Conference Proceedings, November,1996.

11. T. Krygowski and A. Rohatgi “Simultaneous P and B Diffusion, In-Situ Surface Passivation, Impurtiy Filtering and Gettering for High-Efficiency Silicon Solar Cells,” 26th IEEE Photovoltaic Specialists Conference, Anaheim, California, September 29 - October 3, 1997.

Patents and Patent Disclosure Awards

A. Rohatgi and R.B. Campbell, "Contact System for Semiconductor Devices", RES 79-118; R&D Disclosure Award plus NASA Certificate of Recognition, 1979.
A. Rohatgi, J. Bartko and J.R. Davis, "Techniques for Radiation Hardening Devices Sensitive to Displacement Damage", RES 80-298; Disclosure Award, 1980.
J. Bartko, R.C. Smith, and A. Rohatgi, "The Fabrication of Optimized Solar Cells", RES 80-386; Disclosure Award, 1980.

R.G. Seidensticker, P. Rai-Choudhury, R.H. Hopkins and A. Rohatgi, "A Method for Growing High Purity Silicon Dendritic Web for Solar Cell Applications", RES 81-110; Disclosure Award, Westinghouse Trade Secret Acknowledgement Certificate, 1981.

A. Rohatgi, "Annealing Process Induced Radiation Damage", RES 82-346, Disclosure Award, 1982.

M.R. Chin and A. Rohatgi, "Low Temperature Growing of Oxinitride", RES 83-068; Disclosure Award, 1983.
A. Rohatgi, S. Dutta, P. Rai-Choudhury, and R.G. Seidensticker, "Twin Plane Assisted Internal Gettering in Dendritic Web Silicon", RES 83-124, 1983.

A. Rohatgi, P. Rai-Choudhury, and D.W. Whitson, "Chlorine Implantation to Improve Break-down Voltage, Radiation Hardness and Thermal Stability of MOS Devices", RES 84-330, 1984.

A. Rohatgi, R.A. Hoffman, T.W. O'Keefe, R.B. Campbell, and P. Rai-Choudhury, "Development of ZnSe + MgF₂ + Double Layer AR Coating and Aluminum Back Surface Reflection for High Efficiency Dendritic Web Silicon Solar Cells", RES 85-124, 1985.
A. Rohatgi, P. Rai-Choudhury, J.R. Gigante, R. Singh, and S.J. Fonash, "Use of Hydrogen Ion Beam for Low Temperature Processing of Low Leakage, Shallow Junction Ion Implanted Devices", U.S. Patent 4,522,657, 1985.

A. Rohatgi, R.B. Campbell and P. Rai-Choudhury, "High Efficiency Solar Cell Designs Using Doped Polysilicon Layers - A Novel Approach", Disclosure Award plus NASA Recognition Certificate, 1986.

A. Rohatgi, "Development of Coatings for Efficient Solar Cells", NASA Patent Disclosure Award and Recognition Certificate, 1987.

A.W. Smith and A. Rohatgi, "Texture: A Ray Tracing Program for Textured Surfaces", a code for assessing light trapping in textured semiconductors, Georgia Tech Research Corporation, copyright 1991.

R.K. Feeney, D.R. Hertling, and A. Rohatgi, "A High Resolution Non-Destructive Apparatus for the Measurement of Transient Electrical Conductivity", U.S. Patent #07/985,635, 1992.

A. Rohatgi, H. Mehta and N.G. Hingorani, "Grid Contact Self Inversion Layer Cells," U.S. Patent application filed, 1994.
A. Rohatgi, H. Mehta and N.G. Hingorani, "Grid Contact Self Inversion Layer Cells," U.S. Patent application filed, 1994.

Z.Chen, A.Rohatgi, "Method for Low Temperature Plasma Enhanced Chemical Vapor Deposition (PECVD) of an Oxide and Nitride Antireflection Coating on Silicon", U.S. Patent #5,418,019, 1995.
Z. Chen, A. Rohatgi, "Method for passivating Silicon Devices at Low Temperature to Achieve Low Interface State Density and Low Recombination Velocity While Preserving Carrier Lifetime," U.S. Patent #5,462,898, 1995.
W.J. Lackey,A. Rohatgi, A. Smith, B.N. Beckloff, S. Narashima, "Low Cost, Thin Film Solar Cells Prepared by Chemical Vapor Deposition of Titanium Diboride and Silicon", Disclosure Award, 1995.
Z.Chen, A.Rohatgi, "Method for Low Temperature Plasma Enhanced Chemical Vapor Deposition (PECVD) of an Oxide and Nitride Antireflection Coating on Silicon", U.S. Patent #5,418,019, 1995.
Z. Chen, A. Rohatgi, "Method for passivating Silicon Devices at Low Temperature to Achieve Low Interface State Density and Low Recombination Velocity While Preserving Carrier Lifetime," U.S. Patent #5,462,898, 1995.
W.J. Lackey,A. Rohatgi, A. Smith, B.N. Beckloff, S. Narashima, "Low Cost, Thin Film Solar Cells Prepared by Chemical Vapor Deposition of Titanium Diboride and Silicon", Disclosure Award, 1995.

R.K. Feeney, D.R. Hertling, and A. Rohatgi, "Time Varying Electrical Conductivity Tester Using Frequency Discrimination and Power Detector and Methods," U.S. Patent #5495170, February 1996.
A. Rohatgi, Z. Chen, P. Doshi, K.Tate, J.Mejia, "Processes for Producing Low Cost High Efficiency Silicon Solar Cells," U.S. Patent 5,520,271, April 1996.
R.K. Feeney, A. Rohatgi and D.R. Hertling, "Electrical conductivity Tester and Methods Thereof For Accurately Measuring Time-Varying And Steady State Conductivity Using Phase Shift Detection," U.S. Patent #5,508, 610, April 1996.
W.A. Doolittle and A. Rohatgi, "A Novel Computer Based Pseudo-Logarithmic Capacitance/Conductance DLTS System - ROI #1249 "DLTS", U.S. Patent 5,521,839, 1996.
R.K. Feeney, D.R. Hertling, and A. Rohatgi, "Time Varying Electrical Conductivity Tester Using Frequency Discrimination and Power Detector and Methods," U.S. Patent #5495170, February 1996.
A. Rohatgi, Z. Chen, P. Doshi, K.Tate, J.Mejia, "Processes for Producing Low Cost High Efficiency Silicon Solar Cells," U.S. Patent 5,510,271, April 1996.

R.K. Feeney, A. Rohatgi and D.R. Hertling, "Electrical conductivity Tester and Methods Thereof For Accurately Measuring Time-Varying And Steady State Conductivity Using Phase Shift Detection," U.S. Patent #5,508, 610, April 1996.

A. Rohatgi, Z. Chen, P. Doshi, "Processes for Producing Low Cost High Efficiency Silicon Solar Cells", U.S. Patent #5,766,964, June, 1998.
A. Rohatgi, T. Krygowski, "Arrangement, Dopant Source and Method for Making Photovoltaic Cells", U.S. Patent #5,972,784

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Contents:

Refereed Journal Publications

Papers in Conference Proceedings (refereed)

Papers in Conference Proceedings (non-refereed)

Patents and Patent Disclosure Awards