首页|A Novel Matrix-Free Hyperfluorescent System Based on Anti-Quenching TADF Host for High Color Purity MR-TADF Emitters

A Novel Matrix-Free Hyperfluorescent System Based on Anti-Quenching TADF Host for High Color Purity MR-TADF Emitters

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  • NETL
  • NSTL
  • Wiley
Organic light-emitting diodes (OLEDs) based on hyperfluorescent systemhave attracted widespread attention due to their ability to simultaneouslyachieve improvements in efficiency， lifetime， and color purity by combiningthe advantages of high exciton utilization sensitizers and high-color purityemitters。 Traditional hyperfluorescent systems typically involve three or fourcomponents and are severely sensitive to the doping concentration (≈0。5wt%) of a terminal emitter， which inevitably causes high costs and difficultiesin reproducibility。 Here， a novel design concept for a matrix-free hyperfluorescent(MFHF) system that employs a combination of an anti-quenchingTADF host and a high color purity MR-TADF emitter is proposed。 This strategyallows traditional concentration-sensitive MR-TADF emitters to significantlyimprove exciton utilization and reduce exciton lifetime at high doping levels，without the need for complex molecular modifications。 The OLEDs withbinary emissive layer achieve pure-green emission， a maximum externalquantum efficiency of over 30%， and a high maximum power efficiency of145 lm W~(−1)。 The approach offers a straightforward and universal method toachieve anti-quenching matrix-free hyperfluorescent OLEDs with high colorpurity， making them promising for commercial applications in low-costultra-high-definition (UHD) displays。

exciton energy transferhyperfluorescent OLEDsmultiresonancenarrowband electroluminescencequenching resistance

Dehao Jiang、Hisahiro Sasabe、Yuhui Chen、Yuki Sagae、Hiroki Sato、Daisuke Yokoyama、Hiroshi Katagiri、Junji Kido

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Department of Organic Materials ScienceYamagata University4-3-16 Jonan, Yonezawa, Yamagata 992–8510, Japan

Department of Organic Materials ScienceYamagata University4-3-16 Jonan, Yonezawa, Yamagata 992–8510, Japan||ResearchCenter for Organic Electronics (ROEL)Yamagata University4-3-16 Jonan, Yonezawa, Yamagata 992–8510, Japan||FrontierCenter for Organic Materials (FROM)Yamagata University4-3-16 Jonan, Yonezawa, Yamagata 992–8510, Japan

2025

10.1002/adma.202409746

Advanced Materials

Advanced Materials

ISSN：0935-9648
年,卷(期)：2025.37(5)
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