期刊
SOLAR ENERGY
卷 201, 期 -, 页码 190-194出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.solener.2020.03.006
关键词
Cu2SnS3; Ag; Doping; Thin-film solar cells
资金
- National Natural Science Foundations of China [11864035, 11364036, 11474231, 11464041]
- West Light Foundation of Chinese Academy of Sciences (CAS)
- Support Program for Longyuan Youth and Fundamental Research Funds for the Universities of Gansu Province
For the promising next-generation thin-film solar cells, Cu2SnS3 (CTS) solar cells still suffer from low open circuit voltage (VOC) and so resulting an unsatisfactory power conversion efficiency. Herein, Ag was introduced in solution-processed CTS thin films via adding AgNO3 into precursor solution for photovoltaic devices. Compared with CTS, the VOC deficit for CuxAg(2-x)SnS(3) (CATS) based cells could be effectively reduced for about 10 mV, together with the increased short circuit current density (JSC) and fill factor (FF), a power conversion efficiency of 3.99% was achieved. Such improved performance of CATS cells could be attributed to the improved crystallization, reduced shunting channels and the decreased band-gap of CATS films.
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