Efficient TiO2 Surface Treatment Using Cs2CO3 for Solution-Processed Planar-Type Sb2S3 Solar Cells

被引:19
作者
Kim, Wook Hyun [1 ]
Woo, Sungho [1 ]
Kim, Kang-Pil [1 ]
Kwon, Soo-Min [1 ]
Kim, Dae-Hwan [1 ]
机构
[1] DGIST, Convergence Res Ctr Solar Energy, Daegu 42988, South Korea
来源
NANOSCALE RESEARCH LETTERS | 2019年 / 14卷 / 1期
关键词
Planar-type Sb2S3 solar cell; Electron transport layer; Surface treatment; Solution process; Cs2CO3; CESIUM CARBONATE; LOW-COST; ELECTRON; PRECURSOR; FILM;
D O I
10.1186/s11671-019-2858-5
中图分类号
TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
We report a highly effective surface treatment method for planar-type Sb2S3 solar cells by employing a Cs2CO3-modified compact TiO2 (c-TiO2) electron transport layer. It is found that surface treatment using a Cs2CO3 solution can shift the work function of c-TiO2 upward and reduce its surface roughness. As a result, compared with the power conversion efficiency of untreated solar cells, that of the treated solar cells with a glass/FTO/c-TiO2(/Cs2CO3)/Sb2S3/P3HT/Au structure significantly improved from 2.83 to 3.97%. This study demonstrates that the introduction of Cs2CO3 on a c-TiO2 layer is a simple and efficient way to adjust the work function of the electron transport layer and fabricate high-performance planar-type Sb2S3 solar cells.
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收藏
页数:9
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