摘要
The anomalous hysteresis in a perovskite solar cell induced by an asymmetric field is confirmed by a capacitance–voltage measurement. By applying several cycles of alternating reverse and forward scans, this hysteresis phenomenon is obviously alleviated, resulting in a hysteresis-less state in the perovskite solar cell. Meanwhile, the open-circuit voltage and power conversion efficiency of the perovskite solar cell are enhanced by 55.74% and 61.30%, respectively, while the current density and fill factor keep almost invariable. The operation of alleviating hysteresis is essential for further research and is likely to bring in performance gains.
The anomalous hysteresis in a perovskite solar cell induced by an asymmetric field is confirmed by a capacitance–voltage measurement. By applying several cycles of alternating reverse and forward scans, this hysteresis phenomenon is obviously alleviated, resulting in a hysteresis-less state in the perovskite solar cell. Meanwhile, the open-circuit voltage and power conversion efficiency of the perovskite solar cell are enhanced by 55.74% and 61.30%, respectively, while the current density and fill factor keep almost invariable. The operation of alleviating hysteresis is essential for further research and is likely to bring in performance gains.
作者
夏超
宋伟东
张崇臻
袁松洋
胡文晓
秦萍
王汝鹏
赵亮亮
王幸福
何苗
李述体
Chao Xia Wei-Dong Song Chong-Zhen Zhang Song-Yang Yuan Wen-Xiao Hu Ping Qin Ru-Peng Wang Liang-Liang Zhao Xing-Fu Wang Miao He Shu-Ti Li(Guangdong Provincial Key Laboratory of Nanophotonic Functional Materials and Devices, Institute of Opto-electronic Materials and Technology, South China Normal University, Guangzhou 510631, China Guangdong Engineering Research Center of Optoelectronic Functional Materials and Devices, Institute of Opto-electronic Materials and Technology, Guangzhou 510631, China)
基金
supported by the National Natural Science Foundation of China(Grant Nos.11474105 and 51172079)
the Science and Technology Program of Guangdong Province,China(Grant Nos.2015B090903078 and 2015B010105011)
the Science and Technology Project of Guangzhou City,China(Grant No.201607010246)
the Program for Changjiang Scholars and Innovative Research Team in Universities of China(Grant No.IRT13064)
