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a-Si Basis Heterojunction Stacked Solar Cells

Published online by Cambridge University Press:  28 February 2011

Y. Hamakawa
Affiliation:
Faculty of Engineering Science, Osaka University Toyonaka, Osaka 560, Japan
Y. Matsumoto
Affiliation:
Faculty of Engineering Science, Osaka University Toyonaka, Osaka 560, Japan
Xu Zhang-Yang
Affiliation:
Faculty of Engineering Science, Osaka University Toyonaka, Osaka 560, Japan
M. Okuyama
Affiliation:
Faculty of Engineering Science, Osaka University Toyonaka, Osaka 560, Japan
H. Takakura
Affiliation:
Faculty of Engineering Science, Osaka University Toyonaka, Osaka 560, Japan
H. Okamoto
Affiliation:
Faculty of Engineering Science, Osaka University Toyonaka, Osaka 560, Japan
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Abstract

A systematic study has been made on a-Si basis heterojunction tandem structure solar cells. Design rule and optimizations of cell parameters on two and three stacked heterojunction solar cells are discussed on various material bottom junctions stacked with a-Si. A series of experimental trials has been made on some candidate materials. Technical data on cell fabrication processes, device performance are presented. In the -present stage of experiments, 13.3% efficiency on a-Si/poly-Si two terminals tandem solar cell and also on a-Si//poly- CdS/CdTe four terminals cell have been obtained. Some key technologies for future low cost massproduction processes such as growth of polycrystalline thin film for bottom cell are also discussed.

Type
Articles
Copyright
Copyright © Materials Research Society 1986

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References

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