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Peyman Sana is an advisor of the company. Dr. Peyman Sana is a graduate of Georgia Tech in Electrical Engineering in Solar Cell Design and Research. He has authored and co-authored 22 papers, mostly on solar cell efficiency.

Dr. Sana designed and fabricated the RECORD HIGH EFFICIENCY muticrystalline silicon solar cells (17.8%) tested and verified by NREL and Sandia National Labs. He also developed a novel and cost-effective hydrogen passivation of defects by forming gas anneal.

PUBLICATIONS:

1. COM2 SiGe Modular BiCMOS Technology for Digital, Mixed-Signal, and RF Applications M. Carroll, T. Ivanov, S. Kuehne, J. Chu, C. King*, M. Frei*, M. Mastrapasqua*, R. Johnson*, K. Ng*, S. Moinian*, S. Martin*, C. Huang, T. Hsu, D. Nguyen, R. Singh, L. Fritzinger, T. Esry, W. Moller, B. Kane, G. Abeln, D. Hwang, D. Orphee, S. Lytle, M. Roby, D. Vitkavage, D. Chesire, R. Ashton, D. Shuttleworth, M. Thoma, S. Choi, S. Lewellen, P. Mason, T. Lai, H. Hsieh, D. Dennis, E. Harris, R. Gregor, P. Sana, and W. Wu: Bell Laboratories, Lucent Technologies - Orlando, FL and *Murray Hill, NJ. In the Proceedings of the 2000 IEDM, Washington DC, pp. 423-6

2. Study of Boron Doping Profile Control for a Low Vt Device Used in the Advanced Low Power, High Speed Mixed-Signal IC Chen, Alec; Flessner, Kyle; Sana, Peyman ; Dixon, Robert; Malone,Farris; Ying, Peter; Hutter, Lou: DFAB Product Group, Texas Instruments, Dallas, TX. In the Proceedings of the 1998 IEEE/SEMI Advanced Semiconductor Manufacturing Conference and Workshop, Boston, MA, pp. 423-6

3. Gettering and Hydrogen Passivation of Edge-defined Film-fed Grown Multicrystalline Silicon Solar Cells by Al Diffusion and Forming Gas Anneal Sana, P. ; Rohatgi, A.; Kalejs, J.P.; Bell, R.O.: Georgia Institute of Technology, Atlanta, GA. Applied Physics Letters, vol.64, no.1, pp.97-9, January 3 1994.

4. Fabrication and Analysis of High-efficiency Polycrystalline Silicon Solar Cells Sana, P. ; Salami, J.; Rohatgi, A.: School of Electrical Engineering, Atlanta, GA. IEEE Transactions on Electron Devices, vol.40, no.8, pp.1461-8, August 1993.

5. The effect of Aluminum Treatment and Forming Gas Anneal on EFG Silicon Solar Cells Sana, P. ; Rohatgi, A.; Kalejs, J.P.; Bell, R.O.: Center of Exellence for Photovoltaics, Atlanta, GA. In the Proceedings of the 23rd IEEE Photovoltaic Specialists Conference , vol. 23, pp. 111-6, Louisville, May 10-14, 1993.

6. A Novel Technology for the Simultaneous Diffusion of Boron, Aluminum and Phosphorus in Silicon [Solar Cells] Krygowski, T.; Sana, P. ; Crotty, G.; Rohatgi, A.: Univ. Center of Excellence for Photovoltaics Res. & Educ., Atlanta, GA. In the Proceedings of the Twenty Fifth IEEE Photovoltaic Specialists Conference, pp.393-6, 1996.

7. Investigation of the Effects of Aluminum Treatment on Silicon Solar Cells Rohatgi, A.; Sana, P. ; Ramanachalam, M.S.; Salami, J.; Carter, W.B.: Univ. Center for Excellence for Photovoltaics Res. & Educ.,Atlanta, GA. In the Proceedings of the 23rd IEEE Photovoltaic Specialists Conference, pp. 52-57, Louisville, May 10-14, 1993.

8. Fabrication and Analysis of High Efficiency Multicrystalline Silicon Solar Cells Rohatgi, A.; Sana, P. ; Cai, L.; Doolittle, W.A.; Kamra, S.;Doshi, P.; Krygowski, T.; Crotty, G.: Univ.Center of Excellence for Photovoltaics Res. & Edu., Atlanta, GA. In AIP Conference Proceedings, 13th NREL Photovoltaic Program Review, Lakewood, Colorado, no.353 pp.126-34, May 16-9, 1995.

9. A Novel and Effective PECVD SiO2/SiN Antireflection Coating for Si Solar Cells Chen, Z.; Sana, P. ; Salami, J.; Rohatgi, A.: Univ. Center of Excellence for Photovoltaics Res. & Educ., Atlanta, GA. IEEE Transactions on Electron Devices, vol.40, no.6, pp.1161-5, June 1993.

10. Approach Towards High Efficiency Polycrystalline Silicon Solar Cells Rohatgi, A.; Sana, P. ; Chen, Z.; Salami, J.: Georgia Inst. of Technology, Atlanta, GA. In the AIP Conference Proceedings, Photovoltaic Advanced Research and Development Project, no.268, pp.413-20, 1992.

11. Record High Efficiency Solar Cells on Cast Polycrystalline Silicon Rohatgi, A.; Sana, P. ; Salami, J. In the Proceedings of the Photovoltaic Solar Energy-11th International conference pp.159-163, Montreux, Switzerland, 1993.

12. Silicon Photovoltaic Research at Georgia Tech Rohatgi, A.; Sana, P.; Chen, Z.; Salami,J.; Crotty,G. In the Technical Digest of the 6th Sunshine Workshop on Crystalline Silicon Solar Cells, pp. 35-54, Tokyo, Japan, November 18-19, 1993.

13. Effects of Aluminum Gettering and Forming Gas Anneal on Multicrystalline Silicon Solar Cells Rohatgi, A.; Sana, P.; Ramanachalam, M.S.; Carter, W.B.; Kalejs, J.; Bell, R.O. In the Proceedings of NREL Third Point Defect Workshop, The Role of Point Defects and Defect Complexes in Silicon Device Processing, Vail Colorado, pp. 85-98, August 1993.

14. Phosphorus and Aluminum Gettering for High Efficiency Polycrystalline Silicon Solar Cells Rohatgi, A.; Sana, P.; Ramanachalam, R.; Carter, W. B. In the Proceedings of NREL Second Point Defect Workshop, The Role of Point Defects and Defect Complexes in Silicon Device Processing, pp. 143-8, Breckenridge, Colorado, August 1992.

15. Hydrogen in Silicon: A Discussion of Diffusion and Passivation Mechanisms Sopori, B.L.; Deng, X.; Benner, J.P.; Rohatgi, A.; Sana, P. ;Estreicher, S.K.; Park, Y.K.; Roberson, M.A.: National Renewable Energy Lab., Golden, CO. Solar Energy Materials and Solar Cells Conference, Netherlands, vol.41-42 pp.159-69, June 1996.

16. Gettering and Passivation for High Efficiency Multicrystalline Silicon Solar Cells Rohatgi, A.; Chen, Z.; Sana, P. ; Evers, N.; Lolgen, P.;Steeman, R.A.: Center of Excellence for Photovoltaics Res. & Educ., Atlanta, GA. In Journal of Optoelectronics - Devices and Technologies, vol.9, no.4, pp.523-36, December 1994.

17. High Efficiency Multicrystalline Silicon Solar Cells Rohatgi, A.; Chen, Z.; Sana, P. ; Crotty, J.; Salami, J.: School of Electrical Engineering, Georgia Institute of Technology, Atlanta, GA. In Journal of Solar Energy Materials and Solar Cells, vol.34, no.1-4, pp.227-36, September 1994, Netherlands.

18. Gettering and Passivation Techniques for Quality Enhancement of Multicrystalline Silicon Rohatgi, A.; Chen, Z.; Sana, P. ; Evers, N.; Ramanachalam, R. ; Doolittle: School of Electrical Engineering, Georgia Institute of Technology, Atlanta, GA. In the AIP Conference Proceedings. 12th NREL Photovoltaic Program Review, no.303, pp.505-18, 1994.

19. Effects of Illumination Level on Diffusion Length and Efficiency of Poly-Si Cells Chen, Z.; Rohatgi, A.; Sana, P.: Bradley Deptartment of Electrical Engineering, Virginia Polytechnique Institute & State Univ., Blacksburg, VA. In the Proceedings of the Twenty Second IEEE Photovoltaic Specialists Conference, vol.2, pp.1051-6, Las Vegas, 1991.

20. Gettering and Passivation of High Efficiency Multicrystalline Silicon Solar Cells Rohatgi, A.; Chen, Z.; Sana, P.; Ramanachalam, R.; Crotty,J.; Salami, J. In the Technical Digest of the 7th International Photovoltaic Science and Engineering Conference, pp. 93-7, Nagoya, Japan, November 22-26, 1993.

21. Aluminum Treatment-induced Improvement in Bulk Carrier Lifetime Measured Independently from Surface Effects Lolgen, P.; Rohatgi, A.; Sana, P.; Sinke, W.C.; Leguijt, C; Steeman, R.A.; Eikelboom, J.A. In the Proceedings of the 12th European Photovoltaic Solar Energy Conference, Amsterdam, The Netherlands, pp. 1778-8, April 11-15, 1994.

22. Hydrogen in Silicon: Current Understanding of Diffusion and Passivation Mechanisms Sopori, B.L.; Deng, X.; Benner, J.P.; Rohatgi, A.; Sana, P. ;Estreicher, S.K.; Park, Y.K.; Roberson, M.A.: National Renewable Energy Lab., Golden, CO. In the Proceedings of the 1994 IEEE First World Conference on Photovoltaic Energy Conversion. Waikoloa, Hawaii, vol.2, pp.1615-20, December 1994.