Effect of Mg doping on Cu2ZnSnS4 solar cells prepared by DMF-based solution method

被引：21
作者：
Wang, Yunpeng [1 ]
Hao, Ruiting [1 ,2 ]
Guo, Jie [1 ,2 ]
Li, Xiaoming [1 ]
Fang, Shuiliu [2 ]
Liu, Huimin [2 ]
Sun, Shuaihui [2 ]
机构：
[1] Yunnan Normal Univ, Sch Energy & Environm Sci, Kunming 650092, Yunnan, Peoples R China
[2] Yunnan Normal Univ, Yunnan Key Lab Optoelect Informat Technol, Kunming 650092, Yunnan, Peoples R China
来源：
OPTICAL MATERIALS | 2021年 / 117卷
基金：
中国国家自然科学基金;
关键词：
Solar cell; CZMTS; Mg doping; Solution method; Kesterite; THIN-FILMS; OPTICAL-PROPERTIES; EFFICIENCY; SUBSTITUTION; FABRICATION; TRANSITION; GROWTH; DOTS;
D O I：
10.1016/j.optmat.2021.111211
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
In this paper, magnesium was successfully introduced into CZTS using the DMF-based solution method, and CZMTS solar cell was prepared. The effects of Mg doping on the morphology, crystal structure, and electronic properties of the CZTS absorber were investigated in detail. The crystal structure of the CZMTS absorber and the chemical valence states of the other elements (Cu, Zn, Sn, and S) were not changed as shown by XRD, Raman, and XPS analyses. The results show that Mg doping can improve the electronic properties and microstructure of CZTS absorbers, thus enhancing the PCE from 2.91% to 4.10%. This performance enhancement is associated with good crystal quality, reduced cation-disordering defects, and high external quantum efficiency at the longwave region caused less recombination and open circuit voltage loss. Therefore, Mg doping has a positive effect on improving the performance of CZTS solar cells.
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页数：8
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