Fluorine-modified passivator for efficient vacuum-deposited pure-red perovskite light-emitting diodes

Nian Liu; Zhengzheng Liu; Yuanlong Huang; Peipei Du; Xiang Zhang; Yuxin Leng; Jiajun Luo; Juan Du; Jiang Tang

doi:10.1038/s41377-025-01740-1

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Fluorine-modified passivator for efficient vacuum-deposited pure-red perovskite light-emitting diodes

Original Articles

- Fluorine-modified passivator for efficient vacuum-deposited pure-red perovskite light-emitting diodes
- Light: Science & Applications Vol. 14, Issue 5, Pages: 1235-1243(2025)
- Affiliations：
  
  1.Wuhan National Laboratory for Optoelectronics (WNLO) and School of Optical and Electronic Information, Huazhong University of Science and Technology (HUST), 1037 Luoyu Road, Wuhan, Hubei 430074, China
  2.State Key Laboratory of High Field Laser Physics and CAS Center for Excellence in Ultra-intense Laser Science, Shanghai Institute of Optics and Fine Mechanics (SIOM), Chinese Academy of Sciences (CAS), Shanghai 201800, China
  3.School of Physics and Optoelectronic Engineering, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou 310024, China
  4.Key Laboratory of Flexible Optoelectronic Materials and Technology (Jianghan University), Ministry of Education, Flexible Display Materials and Technology Co-Innovation Centre of Hubei Province and School of Optoelectronic Materials & Technology, Jianghan University, 8 Sanjiaohu Road, Wuhan 430056, China
- Author bio：
  
  Zhengzheng Liu (liuzhengzheng@siom.ac.cn)
  Jiajin Luo (luojiajun@hust.edu.cn)
  Juan Du (du@ucas.ac.cn)
- Funds：
- DOI：10.1038/s41377-025-01740-1
  CLC：
- Received：01 July 2024，
  
  Revised：25 December 2024，
  
  Accepted：02 January 2025，
  
  Published Online：10 March 2025，
  
  Published：31 May 2025
- Accepted：
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Liu, N. et al. Fluorine-modified passivator for efficient vacuum-deposited pure-red perovskite light-emitting diodes. Light: Science & Applications, 14, 1235-1243 (2025).
DOI：

Liu, N. et al. Fluorine-modified passivator for efficient vacuum-deposited pure-red perovskite light-emitting diodes. Light: Science & Applications, 14, 1235-1243 (2025). DOI： 10.1038/s41377-025-01740-1.

摘要

Abstract

Vacuum-deposited perovskite light-emitting diodes (PeLEDs) have demonstrated significant potential for high-color-gamut active-matrix displays. Despite the rapid advance of green PeLEDs

red ones remain a considerable challenge because of the inferior photophysical properties of vacuum-deposited red-light-emitting materials. Here

a rationally designed fluorine-modified phosphine oxide additive was introduced to in-situ passivate vacuum-deposited perovskites. The highly polar 2-F-TPPO incorporated perovskite films demonstrated enhanced photoluminescence quantum yield (PLQY)

suppressed defects

and improved crystallinity. When implemented as active layers in PeLEDs

an external quantum efficiency (EQE) of 12.6% with an emission wavelength of 640 nm is achieved

which was 6 times higher compared to the previously reported most efficient vacuum-deposited red PeLEDs (EQE below 2%). Our findings lay the foundations for the further exploration of high-performance vacuum-deposited PeLEDs toward full-color perovskite displays.

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references

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