CsPbBrI perovskites with low energy loss for high-performance indoor and outdoor photovoltaics

作     者：Kai-Li Wang Xiao-Mei Li Yan-Hui Lou Meng Li Zhao-Kui Wang 王凯礼;李小梅;娄艳辉;李萌;王照奎

作者机构：Institute of Functional Nano&Soft Materials(FUNSOM)Jiangsu Key Laboratory for Carbon-Based Functional Materials&DevicesSoochow UniversitySuzhou 215123China College of PhysicsSoochow Institute for Energy and Materials InnovationsSoochow UniversitySuzhou 215006China 

出 版 物：《Science Bulletin》 (科学通报（英文版）)

年 卷 期：2021年第66卷第4期

页      面：347-353,M0004页

核心收录：

学科分类：07[理学] 070205[理学-凝聚态物理] 08[工学] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 0702[理学-物理学] 

基　　金：financial support from the National Key R&D Program of China(2016YFA0202400) the National Natural Science Foundation of China(61674109) the Natural Science Foundation of Jiangsu Province(BK20170059) funded by the Collaborative Innovation Center of Suzhou Nano Science and Technology the Priority Academic Program Development of Jiangsu Higher Education Institutions(PAPD) the “111”Project of The State Administration of Foreign Experts Affairs of China the Open Fund of the State Key Laboratory of Integrated Optoelectronics(IOSKL2018KF07) 

主　　题：Perovskite solar cells Energy loss Indoor light Carrier dynamics Grain size 

摘      要：Over the years,the efficiency of inorganic perovskite solar cells(PSCs)has increased at an unprecedented ***,energy loss in the device has limited a further increase in efficiency and *** this work,we used(NH4)2C2O4·H2O to treat CsPbBrI2 perovskite film during *** CsPbBrI2 underwent secondary crystallization to form high quality films with micrometer-scale and low trap density.(NH4)2C2O4·H2O treatment promoted charge transfer capacity and reduced the ideal *** also dropped the energy loss from 0.80 to 0.64 *** resulting device delivered a power conversion efficiency(PCE)of 16.55%with an open-circuit voltage(Voc)of 1.24 V,which are largely improved compared with the reference device which exhibited a PCE of 13.27%and a Voc of 1.10 *** addition,the optimized treated device presented a record indoor PCE of 28.48%under a fluorescent lamp of 1000 lux,better than that of the reference device(19.05%).