High-power-efficiency and ultra-long-lifetime white OLEDs empowered by robust blue multi-resonance TADF emitters

Guohao Chen; Jingsheng Miao; Xingyu Huang; Zhenghao Zhang; Zhuixing Xue; Manli Huang; Nengquan Li; Xiaosong Cao; Yang Zou; Chuluo Yang

doi:10.1038/s41377-025-01750-z

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High-power-efficiency and ultra-long-lifetime white OLEDs empowered by robust blue multi-resonance TADF emitters

Original Articles

- High-power-efficiency and ultra-long-lifetime white OLEDs empowered by robust blue multi-resonance TADF emitters
- Light: Science & Applications Vol. 14, Issue 3, Pages: 839-848(2025)
- Affiliations：
  
  Shenzhen Key Laboratory of New Information Display and Storage Materials, College of Materials Science and Engineering, Shenzhen University, Shenzhen 518060, China
- Author bio：
  
  Jingsheng Miao (jingshengmiao@szu.edu.cn)
  Chuluo Yang (clyang@szu.edu.cn)
- Funds：
- DOI：10.1038/s41377-025-01750-z
  CLC：
- Received：23 September 2024，
  
  Revised：06 January 2025，
  
  Accepted：2025-01-06，
  
  Published Online：11 February 2025，
  
  Published：31 March 2025
- Accepted：
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Chen, G. H. et al. High-power-efficiency and ultra-long-lifetime white OLEDs empowered by robust blue multi-resonance TADF emitters. Light: Science & Applications, 14, 839-848 (2025).
DOI：

Chen, G. H. et al. High-power-efficiency and ultra-long-lifetime white OLEDs empowered by robust blue multi-resonance TADF emitters. Light: Science & Applications, 14, 839-848 (2025). DOI： 10.1038/s41377-025-01750-z.

摘要

Abstract

White organic light-emitting diodes (WOLEDs) show very promising as next-generation light-sources

but achieving high power efficiency (PE) and long operational lifetime remains challenging because of the lack of stable blue emitters that can harvest all triplet (T

) excitons for light emission. Herein

we propose integrating stable azure multi-resonance thermally activated delayed fluorescent (MR-TADF) emitters into tri-color hybrid WOLEDs to tackle these issues. By meticulously selecting MR-TADF emitters and precisely tuning the exciton recombination zone

the optimized tri-color devices based on BCzBN-3B achieve color-stable white light emission with maximum external quantum efficiency (EQE

max

) and maximum PE (PE

max

) of 34.4% and 101.8 lm W

−1

respectively. Furthermore

the LT

defined as the time for the luminance to drop to 90% of its initial value at 1000 cd m

−2

reaches 761 h. In addition

a hybrid WOLED with deep blue emitter developed using our strategy achieves a high color rendering index of 88 and an EQE

max

of 30.6%

further demonstrating the versatility and effectiveness of our approach. The record-breaking efficiency and ultra-long lifetime underscore the success of hybrid white-light devices by incorporating robust blue MR-TADF emitters. These advancements open new avenues for commercialization of hybrid WOLEDs

presenting promising solutions for energy-efficient lighting and display technologies.

关键词

Keywords

references

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