Microstructural characterization of Cu2ZnSn(S,Se)4 solar cells fabricated from nanoparticles

被引：4

作者：

Zhang, Yiwen ^{[1
]}

Suyama, Naoki ^{[2
]}

Goto, Masanori ^{[2
]}

Kuwana, Jun ^{[2
]}

Sugimoto, Kanta ^{[2
]}

Satake, Tetsuo ^{[1
]}

Kurokawa, Yasuyoshi ^{[2
]}

Yin, Ming ^{[1
]}

Yamada, Akira ^{[2
]}

机构：

[1] Toppan Printing Co Ltd, Tech Res Inst, Sugito, Saitama 3458508, Japan

[2] Tokyo Inst Technol, Dept Phys Elect, Meguro Ku, Tokyo 1528552, Japan

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS | 2015年 / 54卷 / 08期

基金：

日本科学技术振兴机构;

关键词：

THIN-FILMS;

D O I：

10.7567/JJAP.54.08KC05

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We characterized the microstructure of Cu2ZnSn(S,Se)(4) (CZTSSe) solar cells fabricated from Cu-poor, Zn-rich Cu2ZnSnSe4 (CZTSe) nanoparticles. Various sintering atmospheres of sulfur and selenium led to different microstructural properties. For the samples sintered under sulfur atmosphere, a large number of ZnS secondary phases were observed and the Zn/Sn ratio of the grains was significantly lower than 1. Regions of the ZnS secondary phases showed a dark contrast in electron-beam-induced current (EBIC) images, indicating that the existence of the ZnS phases reduced the minority carrier collection efficiency. In contrast, for the samples sintered under selenium atmosphere, Cu was found to accumulate near the grain boundaries to form the Cu-rich CZTSe phases and only a small number of ZnSe secondary phases were detected. (C) 2015 The Japan Society of Applied Physics

引用

页数：5

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