Open AccessLaser‐Induced Recoverable Fluorescence Quenching of Perovskite Films at a Microscopic Grain Scale
Author(s) -
Xiang Yuren,
Cao Yameng,
Yang Wenqiang,
Hu Rui,
Wood Sebastian,
Li Bowei,
Hu Qin,
Zhang Fan,
He Jujie,
Yavari Mozhgan,
Zhao Jinlai,
Zhao Yunlong,
Song Jun,
Qu Junle,
Zhu Rui,
Russell Thomas P.,
Silva S. Ravi P.,
Zhang Wei
Publication year - 2022
Publication title -
energy and environmental materials
Language(s) - English
Resource type - Journals
ISSN - 2575-0356
DOI - 10.1002/eem2.12231
Subject(s) - perovskite (structure) , materials science , quenching (fluorescence) , grain boundary , nucleation , auger effect , optoelectronics , laser , chemical physics , fluorescence , auger , optics , chemistry , composite material , atomic physics , crystallography , microstructure , physics , organic chemistry
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.