Solar cell without environmental pollution by using CZTS thin film

Author

Katagiri, Hironori ; Jimbo, Kazuo ; Moriya, Kazuyuki ; Tsuchida, Kazuyuki

Author_Institution

Dept. of Electr. Eng., Nagaoka Nat. Coll. of Technol., Niigata, Japan

Volume

3

fYear

2003

fDate

18-18 May 2003

Firstpage

2874

Abstract

Aiming to develop the solar cell free from the environmental contaminants, a thin film type solar cell was produced by using Cu/sub 2/ZnSnS/sub 4/ (CZTS). CZTS thin films could be successfully formed by the vapor phase sulfurization of the precursors prepared by vacuum evaporation. Instead of CdSO/sub 4/, CdI/sub 2/ was used as the Cd-source in the preparation of the CdS buffer layer by chemical-bath-deposition technique. This buffer layer increased both the value of FF and the conversion efficiency from 0.4 to 0.6 and from 2.62% to 4.25% respectively. In order to examine the effect of addition of Na, the CZTS-based solar cell with Na/sub 2/S/Mo/SiO/sub 2//SLG substrate was produced. The present study obtained the value of FF and the conversion efficiency as 0.6 and 5.45% respectively, which are the best records in all many studies on CZTS.

Keywords

copper compounds; liquid phase deposited coatings; semiconductor devices; semiconductor growth; semiconductor thin films; solar cells; ternary semiconductors; thin film devices; tin compounds; vacuum deposition; zinc compounds; Cd source; CdI/sub 2/ compound; CdS buffer layer; Cu/sub 2/ZnSnS/sub 4/; Cu/sub 2/ZnSnS/sub 4/ thin film; Na addition; Na/sub 2/S-Mo-SiO/sub 2/; Na/sub 2/S/Mo/SiO/sub 2/ substrate; chemical bath deposition; conversion efficiency; solar cell; vacuum evaporation; vapor phase sulfurization;

fLanguage

English

Publisher

ieee

Conference_Titel

Photovoltaic Energy Conversion, 2003. Proceedings of 3rd World Conference on

Conference_Location

Osaka, Japan

Print_ISBN

4-9901816-0-3

Type

conf

Filename

1305183