From the journal:

Journal of Materials Chemistry C

Efficient host-free delayed fluorescence organic light-emitting diodes†

Xiaolan Tan,‡a   Yanmei Hu,‡b   Yufang Li, ORCID logo *a   Baoshuo Cai,a   Yi-Ting Lee,c   Chihaya Adachib  and  Chin-Yiu Chan ORCID logo *ad  

* Corresponding authors

a Department of Materials Science and Engineering, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong SAR, China
E-mail: yufangli3-c@my.cityu.edu.hk, chinychan2@cityu.edu.hk

b Center for Organic Photonics and Electronics Research (OPERA), Kyushu University, 744 Motooka, Nishi, Fukuoka 819-0395, Japan

c Department of Chemistry, Soochow University, Taipei City 111, Taiwan

d Department of Chemistry, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong SAR, China

Abstract

Efficient non-doped bluish-green to green thermally activated delayed fluorescence (TADF) OLEDs are fabricated with two TADF emitters, namely HDT1 and 36Me-HDT1, achieving maximum external quantum efficiency (EQEmax) values of 16.5% and 21.0%, respectively. Single-stack, three-color, warm-white hyperfluorescent OLEDs are also demonstrated with an EQEmax of 12.1%.

Graphical abstract: Efficient host-free delayed fluorescence organic light-emitting diodes

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Article information

DOI
https://doi.org/10.1039/D5TC02141C
Article type
Communication
Submitted
02 Jun 2025
Accepted
24 Jul 2025
First published
05 Aug 2025

J. Mater. Chem. C, 2025, Advance Article

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Efficient host-free delayed fluorescence organic light-emitting diodes

X. Tan, Y. Hu, Y. Li, B. Cai, Y. Lee, C. Adachi and C. Chan, J. Mater. Chem. C, 2025, Advance Article , DOI: 10.1039/D5TC02141C

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