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- Title
Active Manipulation of Luminescent Dynamics via Au NPs‐CsPbBr<sub>3</sub> Interfacial Engineering.
- Authors
Zhu, Yizhi; Guo, Heng; Cui, Qiannan; Chen, Jinping; Li, Zhuxin; Lu, Junfeng; Lu, Tien‐Chang; Peng, Zhengchun; Xu, Chunxiang; Pan, Caofeng
- Abstract
Manipulating photocarrier dynamics for luminescent materials is fundamentally important for steering luminescent properties of optoelectronic devices. Here, interfacial engineering is realized by constructing Au NPs‐CsPbBr3 interfaces toward resonant coupling between localized surface plasmon and exciton. Through ultrafast laser spectroscopic measurements, it is demonstrated that photoluminance originating from CsPbBr3 excitonic recombination is significantly enhanced at the interface with prolonged lifetimes. Interfacial photocarrier dynamics are mediated by plasmon‐induced hot electron transfer (PHET) and plasmon‐induced resonant energy transfer (PIRET) processes. By simply varying excitation laser wavelengths, PHET path of photocarriers is actively switched on and off. The results are of great significance for actively manipulating photocarrier dynamics of perovskite luminescent devices.
- Subjects
INTERFACE dynamics; LASER measurement; CHARGE exchange; ENGINEERING; ENERGY transfer; OPTOELECTRONIC devices; ELECTROLUMINESCENT devices
- Publication
Laser & Photonics Reviews, 2023, Vol 17, Issue 1, p1
- ISSN
1863-8880
- Publication type
Article
- DOI
10.1002/lpor.202200497