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The Influence of the Composition Ratio on CZTS-based Thin Film Solar Cells

Published online by Cambridge University Press:  31 January 2011

Hironori Katagiri
Affiliation:
hiro@nagaoka-ct.ac.jp, Nagaoka National College of Technology, 888 Nishikatakai, Nagaoka, 940-8532, Japan, +81-258-34-9240, +81-258-34-9240
Kazuo Jimbo
Affiliation:
jimo@st.nagaoka-ct.ac.jp, Nagaoka National College of Technology, Nagaoka, Japan
Masami Tahara
Affiliation:
ac18811y@st.nagaoka-ct.ac.jp, Nagaoka National College of Technology, Nagaoka, Japan
Hideaki Araki
Affiliation:
h-araki@nagaoka-ct.ac.jp, Nagaoka National College of Technology, Nagaoka, Japan
Koichiro Oishi
Affiliation:
oishi@nagaoka-ct.ac.jp, Nagaoka National College of Technology, Nagaoka, Japan
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Abstract

Cu2ZnSnS4 (CZTS) thin films were fabricated by using three RF co-sputtering continued with sulfurization method. The new type of thin film solar cells using CZTS as an absorber consists of buffer-layer and window-layer on CZTS films that were fabricated on a Mo-coated Soda Lime Glass (SLG) substrate. It was confirmed that CZTS solar cells with high conversion efficiency existed in a relatively narrow composition region. In this paper, the fabrication method of CZTS-based thin film solar cells in our laboratory was stated briefly and the influence of the composition ratio on the photovoltaic properties were presented. Furthermore, the properties of a genuine non-toxic solar cell using a Cd-free buffer-layer were introduced.

Type
Research Article
Copyright
Copyright © Materials Research Society 2009

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References

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