Laser‐Induced Recoverable Fluorescence Quenching of Perovskite Films at a Microscopic Grain Scale
Abstract
Understanding the fundamental properties of metal‐halide perovskite materials is driving the development of novel optoelectronic applications. Here, we report the observation of a recoverable laser‐induced fluorescence quenching phenomenon in perovskite films with a microscopic grain‐scale restriction, accompanied by spectral variations. This fluorescence quenching depends on the laser intensity and the dwell time under Auger recombination dominated conditions. These features indicate that the perovskite lattice deformation may take the main responsibility for the transient and show a new aspect to understand halide perovskite photo‐stability. We further modulate this phenomenon by adjusting the charge carrier recombination and extraction, revealing that efficient carrier transfer can improve the bleaching resistance of perovskite grains. Our results provide future opportunities to attain high‐performance devices by tuning the perovskite lattice disorder and harvesting the energetic carriers.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Jan 09, 2022
- Source ID
- 10.1002/eem2.12231
Entities
People
- Bowei Li
- Fan Zhang
- Jinlai Zhao
- Jujie He
- Jun Song
- Junle Qu
- Mozhgan Yavari
- Q. Hu
- Rui Hu
- Rui Zhu
- S. Ravi P. Silva
- Sebastian Wood
- Thomas Paul Russell
- Wei Zhang
- Wenqiang Yang
- Yameng Cao
- Yunlong Zhao
- Yuren Xiang
Organizations
- China Postdoctoral Science Foundation
- Engineering and Physical Sciences Research Council
- European Commission
- National Natural Science Foundation of China
- National Physical Laboratory
- Office of Naval Research Global
- Peking University
- Program 973
- Shenzhen University
- University of Massachusetts
- University of Surrey