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Cu2ZnSnSe4 thin films prepared by selenization of precursor evaporated from Cu2ZnSnSe4 and Na2Se

Published online by Cambridge University Press:  11 March 2014

Mitsuki Nakashima ,
Toshiyuki Yamaguchi  and
Masanobu Izaki
Mitsuki Nakashima
Affiliation:
Wakayama National College of Technology, 77 Noshima, Nada, Gobo 644-0023, Japan
Toshiyuki Yamaguchi
Affiliation:
Wakayama National College of Technology, 77 Noshima, Nada, Gobo 644-0023, Japan
Masanobu Izaki
Affiliation:
Toyohashi University of Technology, 1-1 Hibarigaoka Tenpaku-cho, Toyohashi 441-8580, Japan
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Abstract

Cu2ZnSnSe4 thin films were prepared by using the synthesized Cu2ZnSnSe4 ingot and Na2Se powder at various Na2Se/Cu2ZnSnSe4 mole ratio as evaporation materials for selenization process. From EPMA analysis, the composition was approximately constant even if the Na2Se/Cu2ZnSnSe4 mole ratio increased. X-ray diffraction studies revealed that the thin films had a kesterite Cu2ZnSnSe4 structure and the foreign phases disappeared with increasing the Na2Se/Cu2ZnSnSe4 mole ratio. The Na2Se addition enhanced to grow thin films having a close-packed structure and columnar grains. The values of Voc and Isc in Cu2ZnSnSe4 thin film solar cells increased with increasing the Na2Se/Cu2ZnSnSe4 mole ratio.

Keywords

thin filmannealingphotovoltaic
Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 1603: Symposium T – Ternary and Multinary Cu-chalcogenide Photovoltaic Materials-CIS, CZTS and Other Compounds , 2014 , jsapmrs13-1603-6573
Copyright
Copyright © Materials Research Society 2014 

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References

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