Multiple excitons dynamics of lead halide perovskite
Gao Wanxiao,
Ding Jie,
Bai Zhenxu,
Qi Yaoyao,
Wang Yulei,
Lv Zhiwei
Affiliations
Gao Wanxiao
Center for Advanced Laser Technology, Hebei University of Technology, and Hebei Key Laboratory of Advanced Laser Technology and Equipment, Tianjin300401, China
Ding Jie
Center for Advanced Laser Technology, Hebei University of Technology, and Hebei Key Laboratory of Advanced Laser Technology and Equipment, Tianjin300401, China
Bai Zhenxu
Center for Advanced Laser Technology, Hebei University of Technology, and Hebei Key Laboratory of Advanced Laser Technology and Equipment, Tianjin300401, China
Qi Yaoyao
Center for Advanced Laser Technology, Hebei University of Technology, and Hebei Key Laboratory of Advanced Laser Technology and Equipment, Tianjin300401, China
Wang Yulei
Center for Advanced Laser Technology, Hebei University of Technology, and Hebei Key Laboratory of Advanced Laser Technology and Equipment, Tianjin300401, China
Lv Zhiwei
Center for Advanced Laser Technology, Hebei University of Technology, and Hebei Key Laboratory of Advanced Laser Technology and Equipment, Tianjin300401, China
The lead halide perovskite material shows its unique photoelectric properties, the resulting conversion efficiency of perovskite solar cells. However, the efficiency comes to a bottleneck owing to that mechanism research fall behind the device research. Multiple excitons dynamics play an important role, especially in the lifetime and binding energy of multiple excitons. A long multiexciton lifetime is beneficial to the application for light-emitting devices and photovoltaic devices. Large multiexciton binding energy means a large Stokes shift in exciton absorption, thus avoiding the loss of linear absorption. To conclude, discussions are presented regarding views of current multiple excitons research in terms of the biexciton lifetime and biexciton binding energy that should be considered for further advances in materials and devices.
