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Room Temperature Recovery of Light Induced Changes in Amorphous Silicon Solar Cells

Published online by Cambridge University Press:  01 February 2011

G. Ganguly ,
D.E. Carlson ,
M.S. Bennett ,
F. Willing ,
R.R. Arya  and
P. Stradins
G. Ganguly
Affiliation:
BP Solar, Toano, VA; National Renewable Energy Laboratory, Golden, CO
D.E. Carlson
Affiliation:
BP Solar, Toano, VA; National Renewable Energy Laboratory, Golden, CO
M.S. Bennett
Affiliation:
BP Solar, Toano, VA; National Renewable Energy Laboratory, Golden, CO
F. Willing
Affiliation:
BP Solar, Toano, VA; National Renewable Energy Laboratory, Golden, CO
R.R. Arya
Affiliation:
BP Solar, Toano, VA; National Renewable Energy Laboratory, Golden, CO
P. Stradins
Affiliation:
BP Solar, Toano, VA; National Renewable Energy Laboratory, Golden, CO
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Abstract

We have observed the recovery of the performance of amorphous silicon (a-Si:H) based solar cell (especially the fill factor) at temperatures between 25°C and 170°C after ∼600 hours of light soaking under 1 sun illumination at ∼40°C. We find that there is some recovery of the fill factor of the cells even at temperatures below the temperature of light soaking. The recovery is significantly greater in cells of poor quality. There is also some evidence of enhancement of the recovery rate due to an external electric field. Above the light soaking temperature, a sort of thermally activated recovery of the fill factor is observed.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 762: Symposium A – Amorphous and Nanocrystalline Silicon-Based Films – 2003 , 2003 , A7.9
Copyright
Copyright © Materials Research Society 2003

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