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Stability Studies of Hydrogenated Amorphous Silicon Alloy Solar Cells Prepared with Hydrogen Dilution

Published online by Cambridge University Press:  16 February 2011

J. Yang ,
X. Xu  and
S. Guha
J. Yang
Affiliation:
United Solar Systems Corp., 1100 West Maple Road, Troy, MI 48084
X. Xu
Affiliation:
United Solar Systems Corp., 1100 West Maple Road, Troy, MI 48084
S. Guha
Affiliation:
United Solar Systems Corp., 1100 West Maple Road, Troy, MI 48084
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Abstract

We have fabricated hydrogenated amorphous silicon alloy solar cells using hydrogen dilutions at 175 °C and 300 °C, and obtained improved photovoltaic characteristics in both the initial and degraded states for the highly diluted cells; both the fill factor and the open-circuit voltage exhibit higher values before and after light soaking. Infrared analyses reveal that for a given deposition temperature the amount of bonded hydrogen has similar concentrations between the high and low hydrogen diluted samples. Optical Modelling shows a 20 MeV difference in their optical bandgap. Defect densities obtained from constant photocurrent measurements give similar values for a given deposition temperature both before and after light soaking, inconsistent with solar cell performance.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 336: Symposium A – Amorphous Silicon Technology - 1994 , 1994 , 687
Copyright
Copyright © Materials Research Society 1994

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References

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