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Enhanced Light Trapping of Thin Film Si Solar Cell in Glass-Laminated Module

Published online by Cambridge University Press:  25 April 2012

Takashi Sugiyama ,
Kousuke Chonan  and
Mika Kambe
Takashi Sugiyama
Affiliation:
Asahi Glass Company Research Center, 150 Hazawa-cho, Kanagawa-ku, Yokohama 221-8755 Japan
Kousuke Chonan
Affiliation:
Asahi Glass Company Research Center, 150 Hazawa-cho, Kanagawa-ku, Yokohama 221-8755 Japan
Mika Kambe
Affiliation:
Asahi Glass Company Research Center, 150 Hazawa-cho, Kanagawa-ku, Yokohama 221-8755 Japan
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Abstract

In efforts to achieve higher efficiency of thin film Si solar cell, light trapping is one of the most important strategies in designing the cell structure. From the past studies, it is well known that TCO with a higher haze can exhibit better light trapping characteristics for a superstrate type thin film Si solar cell, while such TCO could give lower Voc and FF values caused by steep valleys in the texture of TCO. Furthermore, TCO with too high haze in a longer wavelength region could make back reflectance at the Ag rear electrode/reflector lower due to plasmonic effect on rough surface of Ag and thus reduces the efficiency of light trapping. In order to solve this contradictory behavior of light trapping in a conventional thin film Si solar cell, we have newly developed a glass-laminated module of thin film Si solar cell which has enhanced light trapping without deteriorating Voc nor high reflectance of Ag rear reflector.

Keywords

amorphousSithin film
Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 1426: Symposium A – Amorphous and Polycrystalline Thin-Film Silicon Science and Technology–2012 , 2012 , pp. 99 - 104
Copyright
Copyright © Materials Research Society 2012

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References

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