Publications

 

Published Journal Papers (refereed)

  1.  Honsberg, C. B., Yun, F., Ebong, A., Taouk, M., Wenham, S. R. and Green, M. A., “685 mV Open Circuit Voltage Laser Grooved Silicon Solar Cell”, Solar Energy Materials and Solar Cells, 34(1-4), 117-123, 1994.
  2. Basore, P. A., Gee, J. M., Buck, M. E., Schubert, W.K., Ruby, DS., Wenham, SR.,  Honsberg, CB., Green, MA., Fukui, K., Fukawa, Y., Takahashi, H., Okada, K., Takayama, M., Shirasawa, K., Watanabe, H., Yun, F., Ebong, A., Taouk, M., Yoshioka, K., Endoh, K., Kobayashi, M., Suzuki, A., Saitoh, T., SOrensen, B., Ichikawa, Y., Matsukuma, K., Morita, K., Warabisako, T., “ SURFACE PASSIVATION FOR SINGLE CRYSTAL SILICON SOLAR CELLS” Solar Energy Materials and Solar Cells, Vol. 34, 607-612, 1994.
  3.  Ebong, A., Taouk, M. and Wenham, S. R., “A low cost metallization scheme for double sided buried contact silicon solar cells”, Solar Energy Materials and Solar Cells, 31(4), 499-507, 1994.
  4. Ebong, A., Lee, S. H., Honsberg, C. B., Wenham, S. R. and Coudounaris, X., “Spay-on TiO2 for buried contact solar cell processing”, Journal of Korean Association of Crystal Growth, 6(2) 263-274, 1996.
  5. Ebong, A. and Lee, S. H., “Diffusion of Buried Contact Grooves with Spin-on Diffusion source”, Journal of Korean Association of Crystal Growth, 6(3) 424-430, 1996.
  6. Ebong, A., Kim, D. S., Cho, Y. H., Ji, H., Cho, E. C. and Lee, S. H., “Present Status of buried contact solar cells research at Samsung Advanced Institute of Technology”, Invited Paper, Journal of Korean Association of Crystal Growth, 6(3) 399-405, 1996.
  7.  Ebong, A., Kim, D. S., Lee, S. H. and Honsberg, C. B., “On Electroless Plating and double sided buried contact silicon solar cells”, Korean Journal of Materials Research, 6(6) 568-575,1996.
  8.  Ebong, A., Kim, D. S. and Lee, S. H., “Isolated Rear and Front Groove Silicon Solar Cells”, Journal of the Korean Physical Society, 29(2), 239-242, 1996.
  9.  Ebong, A., Bowden, S. and Taouk, M., “Adaptation of Drafting Plotter for Buried Contact Groove Formation”, Solar Energy, 57(3), 185-193, 1996.
  10. Ebong, A., Honsberg, C. B. and Wenham, S. R., “Fabrication of Silicon Solar Cells by Pre-deposition and Simultaneous Diffusion of Boron and Phosporus”, Solar Energy Materials and Solar Cells, 44, 271-278, 1996.
  11.  Ebong, A., Taouk, M., Honsberg, C. B. and Wenham, S. R., ‘The use of oxynitrides for the fabrication of buried contact silicon solar cells”, Solar Energy Materials and Solar Cells, 40(2), 183-195, 1996.
  12.  Ebong, A., Honsberg, C. B. and Wenham, S. R., “High efficiency double sided buried contact silicon solar cells”, Japanese Journal of Applied Physics, 35(4A), 2077-2080, 1996.
  13. Ebong, A., Kim, D. S. and Lee, S. H., “1-Dimensional efficiency modeling of rear floating junction buried contact solar cells”, Journal of Korean Association of Crystal Growth, 7(1), 81-92, 1997.
  14. Ebong, A., Honsberg, C. B., Wenham, S. R. and Warta, W., “Characterization of high open circuit voltage double sided buried contact (DSBC) silicon solar cells”, Solar Energy Materials and Solar Cells, 45, 283-299, 1997.
  15. Ebong, A., Honsberg, C. B., Wenham, S. R. and Green, M. A., “Mechanically grooved double sided buried contact silicon solar cells”, Journal of Renewable Energy, 11(3), 331-340, 1997.
  16. Ebong, A. and Kim, D. S., “Low Cost Double Sided Buried Contact Silicon Solar Cells”, Journal Renewable Energy, 11(3), 285-292, 1997.
  17. Cho, Y. H., Ebong, A., Kim, D. S., Cho, E. C. and Lee, S. H., “Advanced Buried Contact solar Cells structure”, Solar Energy Materials and Solar Cells, 48, 173-177, 1997.
  18. Ebong, A., “Overcoming the fill factor limits of Double Sided Buried Contact Silicon Solar Cells”, Solid State Electronics, 41, 1745-1749, 1997.
  19. Ghozati, S. B., Ebong, A., Honsberg, C. B. and Wenham, S. R., “Improved Fill Factor for the Double Sided Buried Contact Solar Cell”, Solar Energy Materials and Solar Cells, 51, 121-128, 1998.
  20. Rohatgi, A., Narasimha, S., Ebong, A. and Doshi, P., “Understanding and Implementation of Rapid Thermal Technologies for High Efficiency Silicon Solar Cells”, IEEE Trans. Electron. Devices, special issue for solar cells, 46 (10) 1970-1977, 1999.
  21. Rohatgi, A., Doshi, P., Ebong, A., Narasimha, S., Krygowski, T. and Moschner, J., “Rapid Processing of low-cost, High Efficiency Silicon Solar Cells”, Bull. Mater. Sci. vol. 22, no.3, 383-390, 1999.
  22. Rohatgi, A., Narasimha, S., Doshi, P., Ebong, A., and Moschner, J., “Rapid Thermal Processing and Screen-printing for Low Cost Silicon Solar Cells”, American Institute of Physics, 354-361, 1999.
  23. Ebong, A., Doshi, P., Narasimha, S., Rohatgi, A., Wang, J., and Elsayed, M. A., “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, 146 (5) 1921-1924, 1999.
  24. Venkataraman, S., Singh, R., Parihar, V., Poole, K. F., Rohatgi, A., Yelundur, V. and Ebong, A., “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 photothermal processing”, Journal of Electronic Materials 28 (12) 1394-1398 1999.
  25. Meier, D. L., Davis, H. P., Garcia, R. A., Salami, J., Rohatgi, A., Ebong, A. and Doshi, P., “Aluminum Alloy Back p-n Junction Dendritic Web Silicon Solar Cell”, Solar Energy Materials and Solar Cells 65, 621-627, 2000.
  26. Ebong, A., Brody, J. and Rohatgi, A., “Optimization of Front Metal Contact Firing Scheme to Achieve High Fill Factors on Screen-Printed Silicon Solar Cells”, Solar Energy Materials and Solar Cells 65, 613-619, 2000.
  27. Rohatgi, A., Ebong, A., Yelundur, V. and Ristow, A., “Rapid Thermal Processing of Next Generation silicon Solar Cells”, Progress in Photovoltaics 8, 515-527, 2000.
  28. Yelundur, V., Rohatgi, A., Ebong, A., Gabor, A. M., Hanoka, J. and Wallace, R. L., “Al-enhanced plasma-enhanced chemical vapor deposition (PECVD) SiNx hydrogen passivation in String Ribbon Silicon”, Journal of Electronic Materials 2000.
  29. Ebong, A., Hilali, M., Rohagi, A., Meier, D., and Ruby, D. S., “Belt Furnace Gettering and Passivation of n-web Silicon for High Efficiency Screen-Printed Front Surface Field solar Cells, Progress in Photovoltaics 9, 327-332, 2001.
  30. Jeong, J. W., Rohatgi, A., Yelundur, V., Ebong, A., Rosenblum, M. D. and Kalejs, J. P., “Enhanced silicon solar cell performance by rapid thermal firing of screen-printed metals”, IEEE Trans. On Electron Dev., 48(12), 2836-2841, 2001.
  31. 30. Hilali, M., Ebong, A., Rohatgi, A. and Meier, D., “Resistivity dependence of minority carrier lifetime and cell performance in p-type dendritic web silicon ribbon”, Solid State Electronics, 45, 1973-1978, 2001.
  32. Damiani, B., Ristow, A., Ebong, A., Rohatgi, A., “Design optimization for higher stabilized efficiency and reduced light-induced degradation in boron-doped Czochralski silicon solar cells”, Progress in Photovoltaic, 10(3) 185-193, 2002.
  33. Rohatgi, A., Yelundur, V., Jeong, J., Ebong, A., Rosembelum, M. D. and Hanoka, J. I., “Fundamental understanding and implementation of Al-enhanced PECVD SiNx hydrogenation in silicon ribbon”, Solar Energy Materials and Solar Cells, 74, 117-126, 2002.
  34. Ebong, A., Hilali, M. and Rohagi, A., “Rapid thermal technologies for high efficiency screen-printed silicon solar cells”, Solar Energy Materials and Solar Cells, 74, 51-55, 2002.
  35. Cao, X. A., LeBoeuf, S. F., Kim, K. H., Sandvik, P. M., Stokes, E. B., Ebong, A., Walker, D., Kretchmer, J., Lin, J. Y. and Jiang, H. X., “Investigation of radiative tunneling in GaN/InGaN single quantum well light emitting diode”, Solid State Electronics, 46, 2291-2294, 2002.
  36. Ebong, A., Arthur, S., Downey, E., Cao, X. A., LeBoeuf, S. and Merfeld, D., “Device and circuit modeling of GaN/InGaN light emitting diodes (LEDs) for optimum current spreading”, Solid State Electronics, 47, 1817-1823, 2003.
  37. Hilali, M. M., Nakayashiki, K., Ebong, A. and Rohatgi, A., “High-efficiency (19%) screen-printed textured cells on low-resistivity float-zone silicon with high sheet-resistance emitters”, Progress in Photovoltaics, 14, 135-144, 2006.
  38. Kang, M. H., Kim, D. S., Ebong, A., Rounsaville, B., Rohatgi, A., Okoniewska, G., and Hong, J., “The study of silane-free SiCxNy film for crystalline silicon solar cells”, J. Electrochem. Soc., 156 (6) H495-H499, 2009.
  39. Ebong, A., Cooper, I., Rounsaville, B., Tate, K., Rohatgi, A., Bunkenburg, B., Cathey, J., Kim, S. and Ruf, D., “High efficiency inline diffused emitter (ILDE) solar cells on mono-crystalline Cz silicon” Progress in Photovoltaics: Research and Applications, April 2010; 18:590-595
  40. Cooper, I., Ebong, A., Renshaw, J., Reedy, R., Al-Jassim, M. M., and Rohatgi, A., “Understanding and use of IR belt furnace for rapid thermal firing of screen-printed contacts to Si solar cells,” IEEE Electron Device Letters, Vol. 31, No. 5, 461-463, 2010.
  41. Cooper, I.B., Ebong, A., Rounsaville, B. C., and Rohatgi, A., “Understanding of high throughput rapid thermal firing of screen-printed contacts to large area cast multicrystalline Si solar cells” IEEE Trans. On Electron Dev., Vol. 99, 1-8, 2010.
  42. Yang, L., Ye, H.Q., Ebong, A., Song, W. T., Zhang, G. J., Wang, J. X., and Ma, Y., “High efficiency screen printed bifacial solar cells on monocrystalline CZ silicon” Progress in Photovoltaic Research and Applications, Vol. 19 (3) 275-279, May 2011.
  43. Kang, M. H., Hong, J., Cooper, I., Ebong, A., Rounsaville, B., and Rohatgi, A., “Reduction in Light Induced Degradation (LID) in B-doped Cz-Si Solar Cells with SiCxNy Antireflection (AR) Coating” Journal of The Electrochemical Society, 158 (7) H724-H726 (2011)
  44. Ebong, A., Cooper, I., Rounsaville, B., Rohatgi, A., Dovrat, M., Kritchman, E., Brusilovsky, D., and Benichou, A., “Capitalizing on the glass-etching effect of silver plating chemistry to contact Si solar cells with homogeneous 100-110 W/sq emitters”, IEEE Electron Device Letters, vol. 32, No. 6, 779-781, 2011.
  45. Chen, C. W., Ebong, A., Tate, K., Zimbardi, F., Rohatgi, A., and Finot, M., “Development and understanding of high efficiency screen-printed concentrator silicon solar cells”, IEEE Journal of Photovoltaics, vol.1, No.2, 231-235, December 2011.
  46. Ebong, A., Cooper, I.B., Rounsaville, B., Rohatgi, A., Dovrat, M., Kritchman, E., Brusilovsky, D., and Benichou, A., “On the ink jetting of full front Ag gridlines for cost-effective metallization of silicon solar cells” IEEE Electron Device Letters, Vol. 33, no. 5, 637-639, 2012.
  47.  Moon Hee Kang; Ajeet Rohatgi; Junegie Hong; Brian Rounsaville; Vijaykumar Upadhyaya; Ebong, Abasifreke; Arnab Das “Effect of carbon containing SiN x antireflection coating on the screen-printed contact and low illumination performance of silicon solar cell”, Progress in Photovoltaics: Research and Applications: Vol. 21, no. 3, 351-358, 2013. 
  48. Ebong, A.,  Cooper, I.B.,  Rounsaville, B., Rohatgi, A., Dovrat, M., Kritchman, E., Brusilovsky, D.,  and Benichou, A.,  “On the ink jetting of full front Ag gridlines for cost-effective metallization of silicon solar cells” IEEE Electron Device Letters, Vol. 33, no. 5, 637-639, 2012. 
  49. Ebong, A. “Pathway to low-cost metallization of silicon solar cell through understanding of the silicon metal interface and plating chemistry”, Electrochim. Acta (2013), http:dx.doi.org/10.1016/j.electacta.2013.09.089

 

Conference Presentations with Proceedings (refereed)

 

  1. Honsberg, C. B., Yun, F., Ebong, A., Taouk, M., Wenham, S. R. and Green, M. A., “685 mV Open Circuit Voltage Laser Grooved Silicon Solar Cell”, Technical Digest of the International PVSEC-7, Nagoya, Japan, 89-90, 1993.
  2.  Zhao, J., Wang, A., M. Taouk, Yun, F., Ebong, A., Stephens, A., Wenham, S. R. and Green, M. A., “20% Efficient Silicon Solar Cell Module“, Proceedings of the , 23rd IEEE Photovoltaic Specialists Conference, Louisville, Kentucky, USA. 1246-1247, 1993.
  3. Huang, Y., Sproul, A. B., Ebong, A. and Green, M. A., “Characterization of buried contact grooves”, Proceedings of the 32nd Annual Conf., International Solar Energy Society (ANZ Section) Sydney, Australia, 253-258, 1994. 
  4. Ebong A., Ghozati, S., Taouk, M., Yun, F., Tang, Y., Honsberg, C. B., Wenham, S. R. and Green, M., A., “Towards 20% double sided buried contact silicon solar cells”, Proceedings of the 32nd Annual Conf., International Solar Energy Society (ANZ Section), Sydney, Australia, 247-252., 1994.
  5. Honsberg, C. B., Wenham, S., Ebong, A., Taouk, M., Tang, Y., Ghozati, S., Yun, F., Grados, A., Green, M. A. and Warta, W., “High Efficiency, Low Cost Buried Contact Silicon Solar Cells“, Proceedings of the, 1st World PV Energy Conversion, Hawaii, 1473-1474, 1994.
  6. Wenham, S. R., Robinson, S. J., Dai, X., Zhao, J., Wang, A., Tang, Y. H., Ebong, A., Honsberg, C. B. and Green, M. A., “Rear Surface Effect in High Efficiency Silicon Solar Cells“, Proceedings of the, 1st World PV Energy Conversion, Hawaii, 1278-1279, 1994.
  7. Ebong, A., Taouk, M., Bowden, S., Honsberg, C. B., Wenham, S. R. and Green, M. A., “Mechanically scribed double sided buried contact silicon solar cells”, Proceedings of the World Renewable Energy Congress, Reading, UK, September 11-15, 162-164, 1994.
  8. Ebong, A., Yun, F., Ghozati, S., Tang, Y., Taouk, M., Honsberg, C. B., Wenham, S. R., “Overcoming the open circuit voltage limit of the buried contact silicon solar cells”, Proceedings of the 12th European Photovoltaic Solar Energy Conference, Amsterdam, The Netherlands, 1775-1777, 1994.
  9. Ghozati, S., Ebong, A., Honsberg, C. and Wenham, S., “Fill factor improvement on double sided buried contact solar cells” Proceedings of the 13th European Photovoltaic Solar Energy Conference, Nice, France, 1213-1214, 1995.
  10. Cho, Y. H., Ebong, A., Kim, D. S., Cho, E. C. and Lee, S. H., “Advanced buried contact solar cell structure” Technical Digest, 9th International Photovoltaic Science and Engineering Conference, Miyazaki – Japan, November 11-15, 317-318, 1996.
  11. Kim, D. S., Ebong, A., Cho, E. C., Cho, Y. H. and Lee, S. H., “Optimization of Surface passivation for high efficiency silicon solar cells” Technical Digest, 9th International Photovoltaic Science and Engineering Conference, Miyazaki – Japan, November 11-15, 329-330, 1996.
  12. Ebong, A., Kim, D. S. and Lee, S. H., “Recent Insight Gained in Electroless Plating of Double Sided Buried Contact Solar Cells” Technical Digest, 9th International Photovoltaic Science and Engineering Conference, Miyazaki – Japan, November 11-15, 215-216, 1996.
  13. Ebong, A., Lee, S. H., Honsberg, C. B. and Wenham, S. R, “Characterization of Spray-on TiO2 for Solar Cell Processing“, Technical Digest, 9th International Photovoltaic Science and Engineering Conference, Miyazaki – Japan, November 11-15, 685-686, 1996.
  14. Ebong, A., Lee, S. H., Honsberg, C. B. and Wenham, S. R, “Optimization of Boron Diffusion for Double Sided Buried Contact Silicon Solar Cells” Proceedings of the , 25th IEEE Photovoltaic Specialist Conference, Washington DC, USA, May 13-17, 513-516, 1996.
  15. Honsberg, C. B. S. B. Ghozati, Ebong, A., Tang, Y. H. and Wenham, S. R, “Elimination of Parasitic Effects in Floating Junction Rear Surface Passivation for Solar Cells”, Proceedings of the 25th IEEE Photovoltaic Specialist Conference, Washington DC, USA, May 13-17, 401-404, 1996.
  16. Wenham, S. R, Chan, B. O., Ghozati, S., Ebong, A., Tang, Y, L. Koschier, K. McIntosh, A. Slade, Honsberg, C. B. and Green, M. A., “Unusual behavior in Laser Grooved Solar Cells” Proceedings of the. 14th European Photovoltaic Solar Energy Conference, Barcelona-Spain, June 30-July 4, 42-47, 1997.
  17. Meier, D. L., Davis, H. P., Garcia, R. A., Salami, J., Rohatgi, A., Ebong, A. and Doshi, P., “Aluminum Alloy Back p-n Junction Dendritic Web Silicon Solar Cell”, Technical Digest, 9th International Photovoltaic Science and Engineering Conference, Sapporo– Japan, Sept 20-24, 765-76, 1999.
  18. Ebong, A., Brody, J. and Rohatgi, A., “Optimization of Front Metal Contact Firing Scheme to Achieve High Fill Factors on Screen-Printed Silicon Solar Cells”, Technical Digest, 9th International Photovoltaic Science and Engineering Conference, Sapporo– Japan, Sept 20-24, 565-566, 1999.
  19. Ebong, A., Hilali, M. and A. Rohagi, “Rapid photo-assisted forming gas anneal (FGA) for high quality screen-printed contacts for silicon solar cells” Proceedings of the 28th IEEE PVSC, Anchorage –Alaska 230-233, 2000.
  20.  Ebong, A., Hilali, M. and Rohatgi, A., “Rapid thermal technologies for high efficiency screen-printed silicon solar cells”, Proceedings of the 12th PVSEC, Korea, 2001.
  21. Rohatgi, A., Yelundur, V., Jeong, J., Ebong, A., Rosembelum, M. D. and Hanoka, J. I., “Fundamental understanding and implementation of Al-enhanced PECVD SiNx hydrogenation in silicon ribbon”, Proceedings fo the 12th PVSEC, Korea, 2002.
  22. Rohatgi, A., Hilali, M., Meier, D., Ebong, A., Hornsberg, C., Caroll, A. F., and Hacke, P., “Self-Doping contacts to silicon using silver coated with a dopant source”, Proceedings of the 16th European conference, Munich, Germany, pp.1307-1310, 2001.
  23. Ristow, A., Hilali, M., Ebong, A., and Rohatgi, A., “Screen-Printed back surface reflector for light trapping in crystalline silicon solar cells”, Proceedings of the 16th European conference, Munich- Germany, 2001.
  24.  Cao, X. A., Topol, K., Shahedipour-Sandvik, F., Teetsov, J., Sandvik, P. M, LeBoeuf, S. F., Ebong, A., Kretchmer, J., Stokes, E. B., Arthur, S., Kaloyeros, A. E., Walker, D., “Influence of defects on electrical and optical characteristics of GaN/InGaN based light emitting diodes”, Proceedings of the SPIE Vol. 4776, 105-113, 2002.
  25.  Ebong, A., Arthur, S., Downey, E., Stokes, E. B., Cao, X. A., Leboeuf, S., Sandvik, P. M. and Walker, D., “Modeling and circuit simulation of GaN-based light emitting diodes for optimum efficiency through uniform current spreading”, Proceedings of the SPIE vol. 4776, 187-194, 2002.
  26. Ebong, A., Downey, E., Arthur, S., Cao, X., S. Lebeouf and Merfeld, D. W., “Simplified electro-optical model for device and circuit simulation of light emitting diodes (LEDs)”, Proceedings of the SPIE, 2003.
  27. Cao, X.A.; Arthur, S.D.; Ebong, A; Leboeuf, S.F.; Merfeld, D.W. “Fabrication, characterization and applications of AlInGaN light-emitting diodes” Proceedings – Electrochemical Society 2003;11224-237
  28. 28. Cao, X.A.; LeBoeuf, S.F.; Garrett, J.L.; Ebong, A.; Rowland, L.B.; Arthur, S.D., “Low-Temperature Operation of Green, Blue and UV InGaN/GaN Multiple-Quantum-Well Light-Emitting DiodesMaterials Research Society Symposium – Proceedings 2003;764349-354.
  29. Hilali, M., Nakayashiki, K., Ebong, A., and Rohatgi, A., “Investigation of high-efficiency screen-printed textured silicon solar cells with high sheet résistance emitter”, Proceedings of the 31st IEEE Photovoltaic Specialist Conference, Orlando, Florida, 2005.
  30. Ebong, A., Hilali, M., Upadhyaya, V., Rounsaville, B., Ebong, I. and Rohatgi, A., “High efficiency screen-printed planar solar cells on single crystalline silicon materials”, Proceedings of the 31st IEEE Photovoltaic Specialist Conference, Orlando, Florida, 2005.
  31. Ebong, A., Upadhyaya, V., Rounsaville, B., Tate, K. and Rohatgi, A., “A comparative study of the performance of silicon screen–printed solar cells fabricated with belt and conventional furnace emitters”, Proceedings of the 20th European Photovoltaic Solar Energy Conference and Exhibition, Barcelona-Spain, June 6-10, 2005.
  32. Rohatgi, A., Ebong, A., Hilali, M., Meemongkolkiat, V., Rounsaville, B. and Ristow, A., “High efficiency screen-printed solar cells on textured mono-crystalline silicon”, Proceedings of the 15th International Photovoltaic Science and Engineering Conference, Shanghai, China, Oct 10-15, 2005.
  33. Kim, D. S., Meemongkolkiat, V., Ebong, A., Rounsaville, B., Upadhyaya, V., A. Das & Rohatgi, A., “2D-Modeling and development of interdigitated back contact solar cells on low-cost substrates”, Proceedings of the 4th World Conference on Photovoltaics, Hawaii, May 8-12, 2006.
  34. Ebong, A., Upadhyaya, V., Rounsaville, B., Kim, D. S., Tate, K. and Rohatgi, A., “Rapid thermal processing of high efficiency n-type silicon solar cells with Al back junction”, Proceedings of the 4th World Conference on Photovoltaics, Hawaii, May 8-12, 2006.
  35. Ebong, A., Upadhyaya, V., Rounsaville, B., Kim, D. S., Tate, K. and Rohatgi, A., “18% Large area screen-printed solar cells on textured MCZ silicon with high sheet resistance emitter”, Proceedings of the 4th World Conference on Photovoltaics, Hawaii, May 8-12, 2006.
  36. Upadhyaya, A., Ebong, A., Kim, D. S., Yelundur, V., Rounsaville, B., Upadhyaya, V., Tate, K. and Rohatgi, A., “High efficiency mono-crystalline solar cells with simple manufacturable technology”, Proceedings of the 21st European Photovoltaic Solar Energy Conference, Dresden – Germany, Sept 4-8, 2006.
  37. Ebong, A., Kim, D. S., Yelundur, V., Upadhyaya, A., Rounsaville, B., Upadhyaya, V., Tate, K. and Rohatgi, A., “Understanding the role of forming gas anneal on the screen-printed crystalline silicon solar cell front silver grid”, Proceedings of the 21st European Photovoltaic Solar Energy Conference, Dresden – Germany, Sept 4-8, 2006.
  38. Ebong, A., Rohatgi, A., Zhang, W. and Bokalo, P., “Development of a low temperature silver paste for high efficiency screen-printed solar cells”, Proceedings of the 21st European Photovoltaic Solar Energy Conference, Dresden – Germany, Sept 4-8, 2006.
  39. Ebong, A. , Nakayashiki, K., Upadhyaya, V., Rohatgi, A., Bathey, B. R., Rosemblum, M. D., Salami, J. and Shaikh, A., “Screen-printed solar cells on less than 200-μm thick EFG sheet silicon”, Proceedings of the 22nd European Photovoltaic Solar Energy Conference, Milan – Italy, Sept. 3-7, 2007.
  40.  Ebong, A., Rohatgi, A., Zhang, W. and Bokalo, P., “Understanding the role of glass frit in the front Ag paste for high sheet resistance emitters”, Proceedings of the 22nd European Photovoltaic Solar Energy Conference, Milan – Italy, Sept. 3-7, 2007.
  41.  Renshaw, J., Ebong, A. and Rohatgi, A., “Development of low-cost plated contact solar cells (PCSC) on high sheet resistance emitters”, Invited, 18th Workshop on crystalline silicon solar cells and modules: materials and processes, Vale Colorado, August 3-6, 2008.
  42. Ebong, A., Kim, D. S., Rohatgi, A. and Zhang, W., “Understanding the mechanism of light induced plating of silver on screen-printed contacts for high sheet resistance emitters with low surface concentration”, Proceedings of the 33rd IEEE Photovoltaic Specialist Conference, San Diego, May 12-16, 2008.
  43. Ebong, A. and Rohatgi, A., “Comprehensive study of silver electroplating baths in conjunction with light induced plating of silver on screen-printed contacts for high efficiency silicon solar cells”, Proceedings of the 23rd European Photovoltaic Solar Energy Conference, Valencia – Spain, September 1-5, 2008.
  44. Ebong, A., Rohatgi, A. and Zhang, W., “Development of front silver paste for producing fine line and high quality contacts to 100 ohm/sq emitters with low surface phosphorus concentration”, Proceedings of the 23rd European Photovoltaic Solar Energy Conference, Valencia – Spain, September 1-5, 2008.
  45. Kang, M. H., Ebong, A., Rounsaville, B., Rohatgi, A. and Hong, J., “Silane-free PECVD silicon carbon nitride (SiCxNy) passivation and anti-reflection coatings for high efficiency silicon solar cells”, Proceedings of the , 34th IEEE Photovoltaic Specialist Conference, Philladelphia, June 7-12, 2009.
  46. Ebong, A., Rohatgi, A., Prunchak, R., Gao, X., Jaeger, F. K., and Hermes, S., “Lead free front silver paste for high quality contacts to silicon solar cells: Glass frit and firing optimization”, Proceedings of the 24th European Photovoltaic Solar Energy Conference, Hamburg – Germany, September 21st to 25th, 2009.
  47. Kang, M. H., Ebong, A., Rounsaville, B., Rohatgi, A., and Hong, J., “Optimization of silane free PECVD SiCxNy as passivation and antireflection coating of silicon solar cells”, Proceedings of the 24th European Photovoltaic Solar Energy Conference, Hamburg – Germany, September 21st to 25th, 2009.
  48. Ebong, A., Rounsaville, B., Cooper, I. B., Upadhyaya, A., Tate, K., Rohatgi, A., Bunkenburg, B., Cathey, J., Kim, S., and Ruf, D., “Optimizing the inline emitters for higher efficiency silicon solar cells”, Proceedings of the 24th European Photovoltaic Solar Energy Conference, Hamburg – Germany, September 21st to 25th, 2009.
  49. Renshaw, J., Ebong, A., Ramanathan, R., Cooper, I. B., Tate, K., Rohatgi, A., and Koehler, I., “Development of low-cost plated contact solar cells using a screen-printed dielectric etching paste”, Proceedings of the 24th European Photovoltaic Solar Energy Conference, Hamburg – Germany, September 21st to 25th, 2009.
  50. Hong, J., Navala, S., Wood, D., Okonniewski, Yang, X., Levasseur, R., Davies, M., Kang, M. H., Ebong, A., Rounsaville, B., and Rohatgi, A., “Silane-Free PECVD silicon carbide (SiCx) and silicon carbon nitride (SiCxNy) dielectric passivation layers for high efficiency crystalline silicon solar cells”, Proceedings of the 24th European Photovoltaic Solar Energy Conference, Hamburg – Germany, September 21st to 25th, 2009.
  51. Ebong, A., Rounsaville, B., Cooper, A. B., Tate, K., Rohatgi, A., Glunz, S., Horteis, M., Mette, A., Gundermann, M., Dovrat, M., Even, R., and Gothait, H., “High efficiency silicon solar cells with ink jetted seed and plated grid on high sheet resistance emitter”, Proceedings of the 35th IEEE Photovoltaic Specialist Conference, Hawaii, June 20-25, 2010
  52. Kang, M. H., Hong, J., Ebong, A., Rounsaville, B., Upadhyaya, V., and Rohatgi, A., “Reduction of light induced degradation (LID) in B-doped Cz-Si solar cells by SiH4-free SiCxNy films” Proceedings of the 35th IEEE Photovoltaic Specialist Conference, Hawaii, June 20-25, 2010
  53. Camacho-Causdrado, J., Cooper, I. B., Ebong, A., Yelundur, V., Bausch, G., Tulloch, W., Burns, G., Beaucarne, G., and Rohatgi, A., “Investigation of the effect of compensation ratio (Rc) on solar cells fabricated with solar grade (SoG) Czochralski silicon”, Proceedings of the 35th IEEE Photovoltaic Specialist Conference, Hawaii, June 20-25, 2010
  54. Ebong, A., Renshaw, J., Rounsaville, B., Cooper, I., Tate., K., Rohatgi, A., Glunz, S., Horteis, M., Mette, A., Gundermann, M., Dovrat, M., Kritchman, E., Brusilovsky, D., and Benichou, A., “Ink jetted seed and plated grid solar cells with homogeneous high sheet resistance emitters” Proceedings of the 25th European Photovoltaics Solar Energy Conference, Valencia-Spain, September 2010.
  55. Rounsaville, B., Ebong, A., Kim, D.S., Cooper, I., and Rohatgi, A., “High efficiency inline diffused emitter solar cells” Proceedings of the 25th European Photovoltaics Solar Energy Conference, Valencia-Spain, September 2010.
  56. Gao, X., Prunchak, R., Jaeger, F. K., Hermes, S., Ebong, A., and Rohatgi, A., “One-step screen-printing metallization forming high aspect ratio grid lines on crystalline solar cells” Proceedings of the 25th European Photovoltaics Solar Energy Conference, Valencia-Spain, September 2010.
  57. Cooper, I., Ebong, A., Renshaw, J., Rounsaville, B., Reedy, R., Al-Jassim, M., and Rohatgi, A., “Understanding the rapid thermal firing of screen-printed contacts to solar cells on low quality materials” Proceedings of the 25th European Photovoltaics Solar Energy Conference, Valencia-Spain, September 2010.
  58. Hong, J., Kang, M. H., Ebong, A., Rounsaville, B., Davies, M., Okoniewska, G., Yang, X,, Navala, S., and Rohatgi, A., “Simple and cost-effective reduction of light induced degradation in B-doped Cz si solar cells by silexium PECVD antireflection coatings” Proceedings of the 25th European Photovoltaics Solar Energy Conference, Valencia-Spain, September 2010.
  59. Ebong, A., Upadhyaya, A., Kean, J., Rounsaville, B, Cooper, I. B., Upadhyaya, V., Kapoor, A., Rohatgi, A., Tamboli, D. C., Wu, A., and Rao, M. B., “Effect of surface cleaning on pyramid size of randomly textured mono crystalline silicon and the impact on solar cell efficiency” Proceedings 37th IEEE PVSC, Seattle, June 2011.
  60. Ebong, A., Cooper, I. B., Tate, K., Rounsaville, B., Zimbard, F., Upadhyaya, V., Rohatgi, A., Dovrat, M., Kritchman, E., Brusilovsky, D., and Benichou, A., “Implementing narrow front silver gridlines through ink jet machine for high quality contacts to silicon solar cells” Proceedings 37th IEEE PVSC, Seattle, June 2011.
  61. Ebong, A., Cooper, I. B., Rounsaville, B., Zimbardi, F., Upadhyaya, A., Rohatgi, A., Borland, W., Mikeska, K, and Carroll, A., “Formation of high quality screen-printed contacts to homogeneous high sheet resistance emitters (HHSE)” Proceedings 37th IEEE PVSC, Seattle, June 2011.
  62. Chen, C. W., Ebong, A., Tate, K., Zimbardi, F., Rohatgi, A., and Finot, M., “Development and understanding of high efficiency screen-printed concentrator silicon solar cells”, Proceedings 37th IEEE PVSC, Seattle, June 2011.
  63. Ebong, A., Upadhyaya, A., Kean, J., Rounsaville, B, Cooper, I. B., Upadhyaya, V., Kapoor, A., Rohatgi, A., Tamboli, D. C., Wu, A., and Rao, M. B., “Impact of surface cleaning on random texturing of crystalline silicon wafers” Proceedings 26th European PVSEC, Hamburg-Germany, September 5th-9th 2011.
  64. Ebong, A., Cooper, I. B., Rounsaville, B., Rohatgi, A., Dovrat, M., Kritchman, E., Brusilovsky, D., and Benichou, A., “Successful implementation of narrow front Ag gridlines with ink jet machine for high quality contacts to silicon solar cells” Proceedings 26th European PVSEC, Hamburg-Germany, September 5th-9th 2011.
  65. Ebong, A., Cooper, I. B., Rounsaville, A., Rohatgi, A., Borland, W., Mikeska, K, and Carroll, A., “Overcoming the technological challenges of contacting homogeneous high sheet resistance emitters (HHSE)” Proceedings 26th European PVSEC, Hamburg-Germany, September 5th-9th 2011
  66. Ebong, A. and Addo, E. “Investigation of the dependence of a screen-printed solar cell open circuit voltage on the Al paste composition” 38th IEEE PVSC, Austin-Texas, June 3-8, 2012.
  67. Chen, N., Ebong, A., and Addo, E., “Understanding and quantifying the impact of Al paste on Al back surface field screen-printed silicon solar cell” Proceeding 27th EU PVSEC, Frankfurt-Germany, September 2012.
  68. Ebong, A., Xjet Solar, Wang, Y., Jin, G., and Zhou, T., “Capitalizing on the precisions of ion implantation and ink jetted fine gridlines to create low-cost high-efficiency silicon solar cells” Energy Procedia: Vol. 33, 24-32, 2013.
  69. Ebong, A et al, “Solar Electricity: Realizing the dream through digital inkjet metallization of multi-crystalline Si solar cell” 9th HONET 2012 conference, Istanbul-Turkey, December 2012.
  70. Ebong, A. et al, “Commercial size multi-crystalline silicon solar cell with ion implant emitter”, 39th IEEE PVSC, Tampa – Florida, June 2013.
  71. Ebong, A., Hankey, D., and Yang, L. “Developing the next generation low-cost inks for high efficiency multicrystalline silicon solar cells”, 10th HONET 2013 conference, Magosa, Cyprus, December 11-13, 2013.

 

Invited Conference Presentations

1. Ebong, A., Kim, D. S., Cho, E. C., Cho, Y. H., Ji, H. I. and Lee, S. H., “Historical development of bifacial silicon solar cells using buried contact technology”, Proceedings of the., Korea Solar Energy Society, 57-63, 1996.

2. Ebong, A. and Kim, D. S.,  “N-type bifacial silicon solar cells using buried contact technology”, Proceedings of the, ISES World Congress, Taejon-Korea, August 24-30, 1997.

3. Yelundur, V., Ebong, A., Kamra, S., Rohatgi, A., Hanoka, J. and Gabor, A., “Approach Towards High Efficiency, manufacturable Thin String Ribbon Silicon Solar Cells”, 8th  Workshop on Crystalline Silicon Solar Cell Materials and Processes,  Copper Mountain, August 17-19, 240-243, 1998.

 4. Doshi, P., Rohatgi, A., Ebong, A. and Narasimha, S., “Recent Progress in Rapid Thermal Processing of Silicon Photovoltaic Devices”,  8th  Workshop on Crystalline Silicon Solar Cell Materials and Processes, Copper Mountain, August 17-19, 86-93, 1998.

 5. Ebong, A., Yelundur, V. and Rohatgi, A., “Effective Surface and Bulk Defect Passivation of Low Resistivity Multi-Crystalline Silicon by Annealed RTO/PECVD SiN Stack”, 8th Workshop on Crystalline Silicon Solar Cell Materials and Processes, Copper Mountain, August 17-19, 232-235, 1998.

6. Saitoh, T., Wang, X., Hashingami, H., Glunz, S., Wettling, W., Ebong, A., Damiani, B., Rohatgi, A., Yamasaki, I., Nunoi, T., Sawai, H., Ohtuka, H., Yazawa, Y., Warabisako, T., Zhao, J. and Green, M., “Light Degradation and Control of Low Resistivity CZ-Si Solar Cells – An International Joint Research”, Technical Digest, 9th  International Photovoltaic Science and Engineering Conference, Sapporo– Japan, Sept 20-24, 553-556, 1999.

7. Ebong, A., Brody, J., Ristow, A., Rohatgi, A. and Meier, D. , “Gettering, Hydrogenation and Resistivity Dependence of Minority Carrier Lifetime in Dendritic Web Ribbon Silicon”, 9th  Workshop on Crystalline Silicon Solar Cell Materials and Processes, Beaver Run – Breckenridge, August 9-11, 189-192, 1999.

8. Damiani, B. M., Ristow, A., Ebong, A. and Rohatgi, A., “Reduced Light Induced Degradation in CZ silicon solar cells by Optimization of Cell Design Parameters”,  10th  Workshop on Crystalline Silicon Solar Cell Materials and Processes, Copper Mountain, August 13-16. 194-197, 2000

 9. Rohatgi, A., Yelundur, V., J. Jeong, Ristow, A. and Ebong, A. 2000 “Advances in Low-cost Multicrystalline silicon solar Cell Processing in the Last Decade”,  10th  Workshop on Crystalline Silicon Solar Cell Materials and Processes, Copper Mountain, August 13-16. 12-18, 2000

 10. Ebong, A., Hilali, M., A. Rohagi, Meier, D. , and Ruby, D. S., “Belt Furnace Gettering and Passivation of n-web Silicon for High Efficiency Screen-Printed Front Surface Field solar Cells”, 10  Workshop on Crystalline Silicon Solar Cell Materials and Processes, Copper Mountain, August 13-16. 234-237, 2000.    

11. Ebong, A. et al., “Variation of screen-printed solar cell performance along commercially grown Ga- and B-doped Czochralski ingots”, 14th  Workshop on crystalline silicon solar cells and modules: materials and processes”, pp254, 2004.

 12. Ebong, A., Hilali, M., Rounsaville, B. and Rohatgi, A.., “Approach towards 20% efficient screen-printed crystalline silicon solar cells”, 15th  Workshop on crystalline silicon solar cells and modules: materials and processes”, pp261, 2005.

 13. Ebong, A., Nakayashiki, K., Upadhyaya, V. and Rohatgi, A., “Large area EFG (100 cm ) ribbon Si solar cells with screen-printed contacts”, 17th  Workshop on crystalline Silicon and Modules: Vale, Colorado, August, 2007.

14. Ebong, A., “Pathway to low-cost metallization of silicon solar cell through understanding of the silicon/metal interface and plating chemistry”, 13th Topical Meeting on the International Society of Electrochemistry, April 7-10, 2013, Pretoria, South Africa.

 

Invited Talks

1. Limitations of metallization to manufacturing high throuhghput, low-cost and high efficiency crystalline silicon solar cells: Crystal Clear Metallization workshop, Utrecht, Netherlands, October 1, 2008

2. Attaining grid parity with photovoltaic electricity: The impact of silicon solar cell research at Georgia Institute of Technology; Invited Seminar – University of North Carolina, Charlotte, October 30, 2009

3. The challenges of achieving high quality contacts with high sheet resistance emitters and low surface phosphorus concentration: Invited Seminar – Samsung Electronics, South Korea, June, 2008

4. Solar Research at Georgia Institute of Technology and the role of front silver paste in achieving high efficiency solar cells with high sheet resistance emitters – Invited talk – Industrial Taiwan Research Institute (ITRI), Taiwan, September 2008

5. The role of belt speed in achieving excellent solar cell performance on emitters with high sheet resistance – Invited talk – ECN, Netherlands, September 2008.

6. Understanding and implementing high quality contacts to advanced emitters for high efficiency solar cells: 2nd Workshop on Metallization for Crystalline Silicon Solar Cells, Constance, Germany; April 14th – 15th 2010.

7. Understanding contact formation on homogeneous emitters for high efficiency solar cells, South Korea, November 2010.

8. The role of crystalline silicon solar cells in the short and long term sustainability of photovoltaic industry, South Korea, January 2011.

9. The impact of ink jetted full front gridline and formation of high quality contacts to non-uniform homogenous high sheet resistance emitters (HHSE), Constance, Germany, May 30-31, 2011

10. Crystalline silicon solar cell technologies: near, medium and long term sustainability, SISF, Sungkyunkwan University, Suwon, Korea, June 26-28, 2011

11.  Photovoltaic Science and Technologies for developing countries, 3rd Renewable Energy Workshop, Abuja, Nigeria, November 2012.

12. The future of Ag in the metallization of crystalline silicon solar cells, DuPont Electronics, Wilmington – Delaware, April 2012.

13. Development of bifacial solar cells on 50 μm round wafers, Bay Area Photovoltaic Consortium, Stanford      University, Stanford, CA, February 2012.

14.  Understanding the liquid phase sintering of screen-printed contacts with nanotechnology dispersion front silver paste, Wuxi Calex, Santa Barbara – California, May 2012.

15.  Technologies of Crystalline Silicon Solar cell for sustainable PV Electricity, Hareon Solar Company, China, July 2012.

16. Understanding the Crystalline Silicon Solar cell technologies for high energy conversion efficiency, Shanghai Shenzhou New Energy Development Company, Shanghai, China, August 2012.

17. Metallization of crystalline silicon solar cells: A Review. 9th HONET 2012 Conference, Istanbul-Turkey, December 12-14, 2012.

18. “Pathway to low-cost metallization of silicon solar cell through understanding of the silicon/metal interface and plating chemistry”, 13th Topical Meeting on the International Society of Electrochemistry, Pretoria, South Africa, April 7-10, 2013.

 

 Patents

Patents granted.

1. US-7375378 – Surface passivated photovoltaic devices

2. US- 7093211 – Techniques for modeling current spreading uniformity in light Emitting diodes

3. US- 7482634 – Monolithic array for solid state ultraviolet light emitters

4. US- 7527742 – Etchant, laminate formed thereby, and device

2. Patents applied for.

1. US 2006/0207647 A1 – High efficiency inorganic nano rod-enhanced photovoltaic Devices

2. US 20090007965 – Solar cell device having amorphous silicon layers 01-08-2009

3. US 20080241988 – Method for fabricating a silicon solar cell structure having Gallium doped p-silicon substrate 10-02-2008

4. US 20080241987 – Method for fabricating a silicon solar cell structure having Silicon nitride layers 10-02-2008

5. US 20080241986 – Method for fabricating a silicon solar cell structure having Amorphous silicon layers 10-02-2008

 Theses

1. A. Ebong “Double Sided Buried Contact Silicon Solar Cells”, 1994, Ph.D. Thesis, The University of New South Wales, Sydney, Australia.

2. A. Ebong “Fabrication, Metallization and Characterization of Silicon P-N Junction Diode”, 1987, M.Sc. Thesis, University of Port Harcourt, Nigeria.

3. A. Ebong “Optimization of Crystal Orientation for Optical Modulators” 1984, B.Sc. Thesis, University of Port Harcourt, Nigeria.