Light-induced recovery in a-Si:H solar cells
- 1 January 1987
- proceedings article
- Published by AIP Publishing in AIP Conference Proceedings
- Vol. 157 (1) , 263-270
- https://doi.org/10.1063/1.36505
Abstract
We describe an apparatus for the cyclic characterization of an a‐Si:H solar cell at 1 sun and irradiation of the cell at a known temperature at 1–65 suns. We then show that, for an illuminated cell placed under sufficient reverse bias, the light‐induced degradation is suppressed (through the extraction of carriers before they can recombine) to an extent that a light‐induced recovery is observed for cells that have been previously degraded by illumination. The light‐induced recovery is enhanced at elevated temperatures. Care is taken to clearly separate the recovery due to illumination from that due to annealing. It is suggested that phonons are responsible for the removal of defects, and their origin is discussed.Keywords
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