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P-layer Optimization in High Performance a-Si:H Solar Cells

Published online by Cambridge University Press:  01 February 2011

Yueqin Xu ,
Bill Nemeth ,
Falah Hasoon ,
Lusheng Hong ,
Anna Duda  and
Qi Wang
Yueqin Xu
Affiliation:
yueqin.xu@nrel.gov, NREL, Golden, Colorado, United States
Bill Nemeth
Affiliation:
william.nemeth@nrel.gov, NREL, Golden, Colorado, United States
Falah Hasoon
Affiliation:
falah.hasoon@nrel.gov, NREL, Golden, Colorado, United States
Lusheng Hong
Affiliation:
hongls@mail.ntust.edu.tw, National Taiwan University of Science and Technology, Taipei, Taiwan, Province of China
Anna Duda
Affiliation:
anna.duda@nrel.gov, NREL, Golden, Colorado, United States
Qi Wang
Affiliation:
qi.wang@nrel.gov, NREL, Golden, Colorado, United States
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Abstract

We report our progress toward high-performance hydrogenated amorphous silicon (a-Si:H) solar cells fabricated in NREL's newly installed multi-chamber film Si deposition system. The a-Si:H layers are made by standard radio frequency plasma-enhanced chemical vapor deposition. This system produces a-Si:H p-i-n single-junction devices on Asahi U-type transparent conducting oxide glass with >10% initial efficiency. The importance of the p-layer to the cell is identified: it plays a critical role in further improving cell performance. Our optimization process involves changing p-layer parameters such as dopant levels, bandgap, and thickness in cells as well as applying a double p-layer. With the optimized p-layer, we are able to increase the fill factor of our cells to as high as 72% while maintaining high open-circuit voltage.

Keywords

amorphousphotovoltaicthin film
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1245: Symposium A – Amorphous and Polycrystalline Thin-Film Silicon Science and Technology-2010 , 2010 , 1245-A07-15
Copyright
Copyright © Materials Research Society 2010

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References

1 Staebler, D. L. and Wronski, C.R., Appl. Phys. Lett. 31, 292, 1977.Google Scholar
2 Green, M.A., Emery, K., Hishikawa, Y., and Warta, W., Prog. Photovolt: Res. Appl. 17, 320, 2009.Google Scholar
3 Yablonovitch, E. and Cody, G., IEEE Trans. Elec. Dev. 29, 300, 1982 Google Scholar
4 Stiebig, H., Siebke, F., Beyer, W., Beneking, C., Rech, B., and Wagner, H., Solar En. Matls. and Solar Cells 48, 351, 1997.Google Scholar
5 Tawada, Y., Tsuge, K., Kondo, M., Okamoto, H., and Hamakawa, Y., J. Appl. Phys. 53, 5273, 1982.Google Scholar
6 Myong, S., Lim, K., and Pears, J., Appl. Phys. Letts. 87, 193509, 2005.Google Scholar