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A Semi-Transparent Solar Cell Using a-SiC

Published online by Cambridge University Press:  25 February 2011

Ken-Ichi Hanaki
Affiliation:
R&D Dept. Nippondenso Co., Ltd. 1-1 Showa-cho, Kariya, Aichi 448, Japan
Yutaka Hattori
Affiliation:
R&D Dept. Nippondenso Co., Ltd. 1-1 Showa-cho, Kariya, Aichi 448, Japan
Hideki Nakabayashi
Affiliation:
R&D Dept. Nippondenso Co., Ltd. 1-1 Showa-cho, Kariya, Aichi 448, Japan
Shunzo Yamaguchi
Affiliation:
R&D Dept. Nippondenso Co., Ltd. 1-1 Showa-cho, Kariya, Aichi 448, Japan
Yoshihiro Hamakawa
Affiliation:
Faculty of Engineering Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka 560, Japan
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Abstract

A review is given of the fabrication technology and applications of a new type of semi-transparent solar cell having the structure p(a-SiC)-i(a- SiC)-n(μ-Si) heterojunction. A series of systematic investigations has been made on the effect of i-layer thickness and the optical energy gap on the photovoltaic performance of p(a-SiC)-i(a-SiC)-n(μ-Si) heterojunction solar cells. The results show that there is an optimum zone in the i-layer properties. For purposes of making cells with sufficient visible light transmission, we adopted an a-SiC active layer whose optical energy gap is in the range from 1.9 to 2.0 eV. In this case, a conversion efficiency of 6.3% with visible light transmittance of more than 25% has been obtained. The rate of light induced degradation has also been checked on this new type of solar cell. This newly developed semi-transparent solar cell, named “SOLAR GLASS,” might open new areas in a wide variety of applications for modern life such as home electronics, automobiles, medical electronics, etc. As an example, an automobile application is demonstrated and discussed.

Type
Research Article
Copyright
Copyright © Materials Research Society 1989

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References

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