Active Manipulation of Luminescent Dynamics via Au NPs-CsPbBr3 Interfacial Engineering

Yizhi Zhu, Heng Guo, Qiannan Cui, Jinping Chen, Zhuxin Li, Junfeng Lu, Tien Chang Lu, Zhengchun Peng, Chunxiang Xu, Caofeng Pan*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

7 Scopus citations

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.

Original languageEnglish
JournalLaser and Photonics Reviews
DOIs
StateAccepted/In press - 2022

Keywords

  • active manipulation
  • luminescent dynamics
  • perovskite
  • surface plasmon

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