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An investigation of amorphous silicon solar cells with a gettering layer

Luczak, K., de Mont-Marin, G.D., Lund, C.P., Jennings, P.J. and Cornish, J.C.L. (2003) An investigation of amorphous silicon solar cells with a gettering layer. In: 3rd World Conference on Photovoltaic Energy Conversion 2003, 11 - 18 May 2003, Osaka, Japan pp. 1856-1858.


Hydrogenated amorphous silicon solar cells (a-Si:H) with a modified intrinsic layer (in this case a so called "gettering layer") show an interesting pattern of photo-degradation during long exposure to simulated sunlight. This work presents some initial results from a careful examination of the behaviour of minority carrier lifetimes and spectral responses of standard, normal cells and cells with a modified intrinsic layer at all stages throughout the photo-degradation. The observed changes in the spectral responses and minority carrier lifetimes during degradation are remarkably different in the two types of solar cells under investigation. Cells with a modified intrinsic layer seem to be more stable during all stages of prolonged photo-degradation. We suspect that processes involving the formation of light induced defects and their migration inside the intrinsic layer can at least partially explain the differences in changes observed in these samples.

Item Type: Conference Paper
Murdoch Affiliation(s): School of Engineering Science
Conference Website:
Notes: Appears in: Photovoltaic Energy Conversion, 2003. Proceedings of 3rd World Conference on (Volume:2 )
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