Skip to main content

Lund University Publications

LUND UNIVERSITY LIBRARIES

All-Optical Switching Based on Sub-Bandgap Photoactivation of Charge Trapping in Metal Halide Perovskites

Wan, Sushu ; Li, Ke ; Zou, Meijun ; Hong, Daocheng ; Xie, Mingcai ; Tan, Hairen ; Scheblykin, Ivan G. LU orcid and Tian, Yuxi LU (2023) In Advanced Materials 35(13).
Abstract

Controllable optical properties are crucial for the application of light-emitting materials in optical devices. In this work, controllable photoluminescence in metal halide perovskite crystals is realized via photoactivation of their defects. It is found that under continuous excitation, the photoluminescence intensity of a CH3NH3PbBr3 crystal can be fully controlled by sub-bandgap energy photon illumination. Such optically controllable emission behavior is rather general as it is observed also in CsPbBr3 and other perovskite materials. The switching mechanism is assigned to reversible light-induced activation/deactivation of nonradiative recombination centers, the presence of which relates to... (More)

Controllable optical properties are crucial for the application of light-emitting materials in optical devices. In this work, controllable photoluminescence in metal halide perovskite crystals is realized via photoactivation of their defects. It is found that under continuous excitation, the photoluminescence intensity of a CH3NH3PbBr3 crystal can be fully controlled by sub-bandgap energy photon illumination. Such optically controllable emission behavior is rather general as it is observed also in CsPbBr3 and other perovskite materials. The switching mechanism is assigned to reversible light-induced activation/deactivation of nonradiative recombination centers, the presence of which relates to an excess of Pb during perovskite synthesis. Given the success of perovskites in photovoltaics and optoelectronics, it is believed that the discovery of green luminescence controlled by red illumination will extend the application scope of perovskites toward optical devices and intelligent control.

(Less)
Please use this url to cite or link to this publication:
author
; ; ; ; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
all-optical switching, perovskites, photoluminescence, sub-bandgap, switching mechanism
in
Advanced Materials
volume
35
issue
13
publisher
John Wiley & Sons Inc.
external identifiers
  • scopus:85148612060
  • pmid:36608687
ISSN
0935-9648
DOI
10.1002/adma.202209851
language
English
LU publication?
yes
id
b8ec4bd8-cba2-48d1-9639-790d36721297
date added to LUP
2023-03-13 14:27:45
date last changed
2024-06-28 01:54:29
@article{b8ec4bd8-cba2-48d1-9639-790d36721297,
  abstract     = {{<p>Controllable optical properties are crucial for the application of light-emitting materials in optical devices. In this work, controllable photoluminescence in metal halide perovskite crystals is realized via photoactivation of their defects. It is found that under continuous excitation, the photoluminescence intensity of a CH<sub>3</sub>NH<sub>3</sub>PbBr<sub>3</sub> crystal can be fully controlled by sub-bandgap energy photon illumination. Such optically controllable emission behavior is rather general as it is observed also in CsPbBr<sub>3</sub> and other perovskite materials. The switching mechanism is assigned to reversible light-induced activation/deactivation of nonradiative recombination centers, the presence of which relates to an excess of Pb during perovskite synthesis. Given the success of perovskites in photovoltaics and optoelectronics, it is believed that the discovery of green luminescence controlled by red illumination will extend the application scope of perovskites toward optical devices and intelligent control.</p>}},
  author       = {{Wan, Sushu and Li, Ke and Zou, Meijun and Hong, Daocheng and Xie, Mingcai and Tan, Hairen and Scheblykin, Ivan G. and Tian, Yuxi}},
  issn         = {{0935-9648}},
  keywords     = {{all-optical switching; perovskites; photoluminescence; sub-bandgap; switching mechanism}},
  language     = {{eng}},
  number       = {{13}},
  publisher    = {{John Wiley & Sons Inc.}},
  series       = {{Advanced Materials}},
  title        = {{All-Optical Switching Based on Sub-Bandgap Photoactivation of Charge Trapping in Metal Halide Perovskites}},
  url          = {{http://dx.doi.org/10.1002/adma.202209851}},
  doi          = {{10.1002/adma.202209851}},
  volume       = {{35}},
  year         = {{2023}},
}