High performance all-inorganic CsPbI2Br perovskite solar cells with low energy losses

被引:19
|
作者
Yang, Yifan [1 ]
Wang, Tianyi [1 ]
Zhang, Yu [1 ]
Zhang, Xiaohan [1 ]
Li, Na [1 ,2 ]
Wang, Peng [1 ]
Qian, Yinping [1 ]
Rong, Qikun [1 ]
Shui, Lingling [1 ,2 ]
Zhou, Guofu [1 ]
Nian, Li [1 ]
机构
[1] South China Normal Univ, South China Acad Adv Optoelect, Guangzhou 510006, Peoples R China
[2] South China Normal Univ, Sch Informat & Optoelect Sci & Engn, Guangzhou 510006, Peoples R China
关键词
All-inorganic; Perovskite solar cells; Low energy losses; Interface engineering; HALIDES;
D O I
10.1016/j.solener.2019.12.011
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
Highly efficient all-inorganic CsPbI2Br perovskite solar cells (PSCs) are fabricated by employing a simply solution processed ZnO/SnO2 bilayer electron transport layer (ETL). High iodine content CsPbI2Br film forms on the bilayer ETL surface with regular crystal grain and full coverage, which is benefit from the well crystal matching between perovskite and SnO2. On the other hand, the lower work function of ZnO compared with SnO2 reduces the energy losses (E-loss) in devices. As a result, the all-inorganic CsPbI2Br PSCs based on ZnO/SnO2 bilayer ETL demonstrate high V-oc of 1.22 V and improved power conversion efficiency (PCE) to 13.7%.
引用
收藏
页码:22 / 26
页数:5
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