Photon‐Induced Reversible Phase Transition in CsPbBr3 Perovskite

Structure reorganization within perovskite materials has attracted much attention due to its assisted appealing features in optoelectronic devices, such as achieving continue‐wave laser and performance enhancement in photovoltaic devices. Unfortunately, the difficulty of controlling reorganization p...

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Bibliographic Details
Published in:Advanced functional materials 2019-03, Vol.29 (13), p.n/a
Main Authors: Xue, Jie, Yang, Dandan, Cai, Bo, Xu, Xiaobao, Wang, Jian, Ma, He, Yu, Xuechao, Yuan, Guoliang, Zou, Yousheng, Song, Jizhong, Zeng, Haibo
Format: Article
Language:English
Subjects:
Density functional theory
Devices
diffusion potential difference
Light
Materials science
Mathematical analysis
molecular dynamic
Optoelectronic devices
Performance enhancement
perovskite
Perovskite structure
Perovskites
phase transition
Phase transitions
Photovoltaic cells
Raman spectroscopy
Solar cells
Stability
Variation
volumetric striction
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Summary:Structure reorganization within perovskite materials has attracted much attention due to its assisted appealing features in optoelectronic devices, such as achieving continue‐wave laser and performance enhancement in photovoltaic devices. Unfortunately, the difficulty of controlling reorganization processing and unclear underlying mechanisms impose an impediment for taking advantage of the structural reorganization in pursuit of distinctive functions in perovskite‐based devices. In this work, using above‐bandgap illumination with a small energy threshold (1.6 mW cm−2) triggering phase transition from orthorhombic to tetragonal in CsPbBr3 is first reported. This photon‐induced structure reorganization is reversible and presents a fast and controllable response (
ISSN:1616-301X
1616-3028
DOI:10.1002/adfm.201807922