Improvement of selectivity for CO2 reduction by using Cu2ZnSnS4 electrodes modified with different buffer layers (CdS and In2S3) under visible light irradiation

被引：27

作者：

Kamimura, Sunao ^{[1
,2
,3
]}

Sasaki, Yousuke ^{[1
]}

Kanaya, Masaki ^{[1
]}

Tsubota, Toshiki ^{[1
]}

Ohno, Teruhisa ^{[1
,3
,4
]}

机构：

[1] Kyushu Inst Technol, Dept Appl Chem, Fac Engn, 1-1 Sensuicho, Kitakyushu, Fukuoka 8048550, Japan

[2] Japan Sci & Technol Agcy, PRESTO, 4-1-8 Honcho, Kawaguchi, Saitama 3220012, Japan

[3] Kyushu Inst Technol, Res Ctr Adv Ecofitting Technol, 1-1 Sensuicho, Kitakyushu, Fukuoka 8048550, Japan

[4] Japan Sci & Technol Agcy, ACT C, 4-1-8 Honcho, Kawaguchi, Saitama 3220012, Japan

来源：

RSC Advances | 2016年 / 6卷 / 113期

基金：

日本科学技术振兴机构;

关键词：

THIN-FILMS; SOLAR-CELLS; WATER REDUCTION; RAMAN; PHOTOCATHODE; CONVERSION; COMPLEX; PHOTOELECTRODE; PHOTOCATALYST; DECOMPOSITION;

D O I：

10.1039/c6ra22546b

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Cu2ZnSnS4 (CZTS) electrodes modified with different n-type buffer layers (CdS and In2S3) were used as photocathodes for CO2 reduction under visible light irradiation (420 < lambda < 800 nm) in aqueous media. Compared to a bare CZTS electrode, CZTS electrodes modified with n-type buffer layers (CdS and In2S3), by which a p-n heterojunction between CZTS and the n-type buffer layer is formed, showed a significant increase in the photocurrent assigned to CO2 reduction. In addition, product selectivity of CO2 reduction was improved by surface modification with an n-type buffer layer: that is, selective CO2 reduction into CO was achieved by using a CdS/CZTS electrode, while HCOOH selectivity was observed over an In2S3/CZTS electrode. In this study, we investigated the photoelectrochemical properties of CZTS electrodes modified with n-type buffer layers (CdS and In2S3) in conjunction with the structural and optical properties, and we investigated their activity for PEC CO2 reduction.

引用

页码：112594 / 112601

页数：8

共 33 条

[1] Cu2Zn1-xCdxSn(Se1-ySy)4 solid solutions as absorber materials for solar cells [J].