Triboluminescence of metal halide perovskite films

Hao Tian; Fengke Sun; Jun Chen; Fusai Sun; Xiaotao Liu; Yang Li; Zhanjun Zhu; Junxue Guo; Bo Zhou; Xin Guo; Can Li

doi:10.1038/s41377-025-02032-4

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Triboluminescence of metal halide perovskite films

Original Articles

- Triboluminescence of metal halide perovskite films
- Light: Science & Applications Vol. 14, Issue 12, Pages: 4068-4075(2025)
- Affiliations：
  
  1.State Key Laboratory of Photoelectric Conversion and Utilization of Solar Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, China
  2.University of Chinese Academy of Sciences, Beijing, China
  3.State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, China
- Author bio：
  
  Xin Guo (guoxin@dicp.ac.cn)
  Can Li (canli@dicp.ac.cn)
- Funds：
- DOI：10.1038/s41377-025-02032-4
  CLC：
- Received：31 March 2025，
  
  Revised：2025-08-26，
  
  Accepted：01 September 2025，
  
  Published Online：06 November 2025，
  
  Published：31 December 2025
- Accepted：
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Tian, H. et al. Triboluminescence of metal halide perovskite films. Light: Science & Applications, 14, 4068-4075 (2025).
DOI：

Tian, H. et al. Triboluminescence of metal halide perovskite films. Light: Science & Applications, 14, 4068-4075 (2025). DOI： 10.1038/s41377-025-02032-4.

摘要

Abstract

Metal halide perovskites (MHPs) have shown fantastic properties such as photoelectric conversion

electroluminescence

light amplification

ferroelectricity

and flexoelectricity

becoming versatile materials in diverse fields. Herein

we report a previously undiscovered nature of the MHP film

i.e. triboluminescence (TL)

and elucidate its underlying mechanism. The TL response is triggered when an MHP film is scraped by specific materials (like Cu

Pt) with a lower Fermi level than that of the MHP. The friction induces electron transfer from MHP to scraper

generating a positive electrostatic field on the surface of the MHP film

which leads to stretched MHP lattices owing to electrostatic repulsion

consequently enhancing fluorescence and charge carrier lifetime. If the friction material (like Al) has a higher Fermi level

electron transfer process

electrostatic field direction

and lattice structure change are just the opposite

resulting in reduced fluorescence. This work unveils the TL phenomenon of the MHP film and the unique mechanism

opening up new avenues for explorations on the appealing MHPs.

关键词

Keywords

references

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