All-Optical Switching Based on Sub-Bandgap Photoactivation of Charge Trapping in Metal Halide Perovskites
(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.
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- author
- Wan, Sushu ; Li, Ke ; Zou, Meijun ; Hong, Daocheng ; Xie, Mingcai ; Tan, Hairen ; Scheblykin, Ivan G. LU and Tian, Yuxi LU
- organization
- publishing date
- 2023
- 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
- 2024-10-04 12:24:46
@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}}, }