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Improved Amorphous Silicon Alloy Solar Cells for Module Fabrication

Published online by Cambridge University Press:  15 February 2011

A. Banerjee ,
J. Yang  and
S. Guha
A. Banerjee
Affiliation:
United Solar Systems Corp., 1100 W.Maple Road, Troy, MI 48084
J. Yang
Affiliation:
United Solar Systems Corp., 1100 W.Maple Road, Troy, MI 48084
S. Guha
Affiliation:
United Solar Systems Corp., 1100 W.Maple Road, Troy, MI 48084
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Abstract

An initial conversion efficiency of 13.5% has been obtained on a triple-junction triple-bandgap device fabricated in a large-area deposition reactor capable of producing one-square-foot modules. The intrinsic layer of the top cell is a wide bandgap amorphous silicon alloy. The middle and bottom cells employ high quality amorphous silicon-germanium alloy. The high efficiency of the triple-junction cell is attributed to the relative reduction of the optical loss in the top tunnel junction and the improvement in the quality of the middle and bottom component cells. Triple-junction devices with initial efficiency of 13.3% have shown saturation at 11.6% after light soaking. Modules of aperture area 909cm2 have been fabricated using an assembly process similar to the one being currently used in our manufacturing line. The module design consists of onelarge-area, high-current monolithic multijunction device. The status of the small-area devices andmodules is described

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 467: Symposium A – Amorphous and Microcrystalline Silicon Technology - 1997 , 1997 , 711
Copyright
Copyright © Materials Research Society 1997

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References

REFERENCES

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