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Amorphous Silicon Alloy Photovoltaic Technology - From R&D to Production

Published online by Cambridge University Press:  15 February 2011

S. Guha ,
J. Yang ,
A. Banerjee ,
T. Glatfelter ,
K. Hoffman ,
S. R Ovshinsky ,
M. Izu ,
H. C. Ovshinsky  and
X. Deng
S. Guha
Affiliation:
United Solar Systems Corp., 1100 West Maple Road, Troy, MI 48084
J. Yang
Affiliation:
United Solar Systems Corp., 1100 West Maple Road, Troy, MI 48084
A. Banerjee
Affiliation:
United Solar Systems Corp., 1100 West Maple Road, Troy, MI 48084
T. Glatfelter
Affiliation:
United Solar Systems Corp., 1100 West Maple Road, Troy, MI 48084
K. Hoffman
Affiliation:
United Solar Systems Corp., 1100 West Maple Road, Troy, MI 48084
S. R Ovshinsky
Affiliation:
Energy Conversion Devices, Inc., 1675 West Maple Road, Troy, MI 48084
M. Izu
Affiliation:
Energy Conversion Devices, Inc., 1675 West Maple Road, Troy, MI 48084
H. C. Ovshinsky
Affiliation:
Energy Conversion Devices, Inc., 1675 West Maple Road, Troy, MI 48084
X. Deng
Affiliation:
Energy Conversion Devices, Inc., 1675 West Maple Road, Troy, MI 48084
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Abstract

The key requirements for photovoltaic modules to be accepted for large-scale terrestrial applications are (i) low material cost, (ii) high efficiency with good stability, (iii) low manufacturing cost with good yield and (iv) environmental safety. Thin films of amorphous silicon alloy are inexpensive; the products are also environmentally benign. The challenge has been to improve the stable efficiency of these modules and transfer the R&D results into production. Using a multijunction, multi-bandgap approach to capture the solar spectrum more efficiently, we have developed one-square-foot modules with initial efficiency of 11.8% After 1000 h of one-sun light soaking, a stable efficiency of 10.2% was obtained. Both the efficiency values were confirmed by National Renewable Energy Laboratory. The technology has been transferred to production using an automated roll-to-roll process in which different layers of the cell structure are deposited in a continuous manner onto stainless steel rolls, 14′ wide and half a mile long. The rolls are next processed into modules of different sizes. This inexpensive manufacturing process produces high efficiency modules with subcell yields greater than 99% The key features of the technology transfer and future scope for improvement are discussed.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 345: Symposium M – Flat Panel Display Materials , 1994 , 11
Copyright
Copyright © Materials Research Society 1994

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References

1. See, for example, Mat. Res. Soc. Symp. Proc. 297 (1993).Google Scholar
2. Guha, S., Mat. Res. Soc. Symp. Proc. 149, 405 (1980).Google Scholar
3. Banerjee, A. and Guha, S., J. Appl. Phys. 69, 1030 (1991).Google Scholar
4. Banerjee, A., Yang, J., and Guha, S. (to be published).Google Scholar
5. Yablonovitch, E. and Cody, G., IEEE ED–29, 300 (1982).Google Scholar
6. Guha, S., Optoelectronics 5 (2), 201–207 (1990).Google Scholar
7. Guha, S., Narasimhan, K. L., and Pietruszko, S. M., J. Appl. Phys. 52, 859 (1981).Google Scholar
8. Tanaka, K. and Matsuda, A., Mat. Sci. Reports 2, 139 (1987).Google Scholar
9. Gallagher, A., SERI Technical Report, SER/TP-211-3747 (1990).Google Scholar
10. Guha, S., Payson, J. S., Agarwal, S. C., and Ovshinsky, S. R., J. Non-cryst. Solids 97–98, 1455 (1987).Google Scholar
11. Guha, S., Yang, J., Pawlikiewicz, A., Glatfelter, T., Ross, R., and Ovshinsky, S. R., Appl. Phys. Lett. 54, 2330 (1989).Google Scholar
12. Xu, X., Yang, J., and Guha, S., Proc. 23rd IEEE PVSC, Louisville, KY, 971 (1993).Google Scholar
13. Guha, S., Yang, J., Nath, P., and Hack, M., Appl. Phys. Lett. 49, 218 (1986).Google Scholar
14. Banerjee, A., Yang, J., Glatfelter, T., Hoffman, K., and Guha, S., Appl. Phys. Lett. 64, 1517 (1994).Google Scholar
15. Yang, J. and Guha, S., Appl. Phys. Lett. 61, 2917 (1992).Google Scholar
16. Luft, W., Stafford, B., and Roedem, B. von, in Amorphous Silicon Materials and Solar Cells, AIP Conf. Proc. No. 234, edited by Stafford, B. (American Institute of Physics, New York, 1991), p. 3.Google Scholar
17. Guha, S., Yang, J., Banerjee, A., Glatfelter, T., Hoffman, K., and Xu, X., PVSEC-7, 43 (1993).Google Scholar
18. Izu, M. and Ovshinsky, S. R., SPIE Proc. 407, 43 (1983).Google Scholar
19. Nath, P., Hoffman, K., Call, J., Vogeli, C., Izu, M., and Ovshinsky, S.R., PVSEC-3, 395 (1987).Google Scholar
20. Luft, W., Roedem, B. von, Stafford, B., Waddington, D., and Mrig, L., Proc. 22nd IEEE PVSC, Las Vegas, NV, 1393 (1981).Google Scholar
21. Izu, M., Deng, X., Krisko, A., Whelan, K., Young, R., Ovshinsky, H. C., Narasimhan, K. L., and Ovshinsky, S. R., Proc. 23rd IEEE PVSC, Louisville, KY, 919 (1993).Google Scholar
22. Ovshinsky, S. R., Solar Energy Materials (in press).Google Scholar