Synthesis and investigation of solution-processed Bi-doped Cu2ZnSn(S, Se)4 thin-film solar cells

被引：9

作者：

Zhao, Na ^{[1
]}

Sui, Yingrui ^{[1
]}

Zeng, Fancong ^{[1
]}

Ma, Meiling ^{[1
]}

Wang, Tianyue ^{[1
]}

Wang, Zhanwu ^{[1
]}

Yang, Lili ^{[1
]}

Wang, Fengyou ^{[1
]}

Liu, Huilian ^{[1
]}

Yao, Bin ^{[2
,3
]}

机构：

[1] Jilin Normal Univ, Key Lab Funct Mat Phys & Chem, Minist Educ, Siping 136000, Jilin, Peoples R China

[2] Jilin Univ, State Key Lab Superhard Mat, Changchun 130012, Peoples R China

[3] Jilin Univ, Coll Phys, Changchun 130012, Peoples R China

来源：

SOLAR ENERGY MATERIALS AND SOLAR CELLS | 2022年 / 248卷

关键词：

CZTBiSSe; Thin-film; Solution-processed; Two-step selenization; Photoelectric properties; Solar cells; BAND-GAP; HETEROJUNCTION; NANOCRYSTALS; DC;

D O I：

10.1016/j.solmat.2022.112030

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

Surface morphology plays a crucial role in influencing the film quality and photoelectric conversion efficiency (PCE) of a Kesterite Cu2ZnSn(S, Se)4 (CZTSSe) solar cell. Herein, the bismuth (Bi) doping strategy to improve the surface morphology of the solution-processed CZTSSe film for high solar cell efficiency is reported. With a two-step selenization strategy to facilitate the Bi-doped CZTSSe (CZTBiSSe) phase formation, improving the crys-talline quality of the absorber, increasing the carrier mobility, and reducing the band tailing, a cell efficiency of 6.94% has been achieved. These results demonstrate the significance of Bi doping into CZTSSe to improve the device's performance. This work offers new insights into the effects of Bi doping on CZTSSe via a solution -processed approach and provides a deeper understanding of the origin of the efficiency improvement of Bi-doped CZTSSe thin film solar cells.

引用

页数：9

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