An Ultraviolet Thermally Activated Delayed Fluorescence OLED with Total External Quantum Efficiency over 9.
organic light-emitting diodes
thermally activated delayed fluorescence
Journal
Advanced materials (Deerfield Beach, Fla.)
ISSN: 1521-4095
Titre abrégé: Adv Mater
Pays: Germany
ID NLM: 9885358
Informations de publication
Date de publication:
Aug 2020
Aug 2020
Historique:
received:
22
02
2020
revised:
22
05
2020
pubmed:
4
7
2020
medline:
4
7
2020
entrez:
4
7
2020
Statut:
ppublish
Résumé
Owing to the difficulty in acquiring compounds with combined high energy bandgaps and lower-lying intramolecular charge-transfer excited states, the development of ultraviolet (UV) thermally activated delayed fluorescence (TADF) materials is quite challenging. Herein, through interlocking of the diphenylsulfone (PS) acceptor unit of a reported deep-blue TADF emitter (CZ-PS) by a dimethylmethylene bridge, CZ-MPS, a UV-emissive TADF compound bearing a shallower LUMO energy level and a more rigid structure than those of CZ-PS is achieved. This represents the first example of a UV-emissive TADF compound. Organic light-emitting diode (OLED) using CZ-MPS as the guest material can emit efficient UV light with emission maximum of 389 nm and maximum total external quantum efficiency (EQE
Identifiants
pubmed: 32618079
doi: 10.1002/adma.202001248
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
e2001248Subventions
Organisme : National Natural Science Foundation of China
ID : 21672156
Organisme : National Natural Science Foundation of China
ID : 21772172
Organisme : National Natural Science Foundation of China
ID : 21875148
Organisme : National Natural Science Foundation of China
ID : 21773297
Organisme : National Natural Science Foundation of China
ID : 21973108
Organisme : National Natural Science Foundation of China
ID : U1730127
Organisme : National Key Program of Research and Development
ID : 2018YFB0703900
Informations de copyright
© 2020 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
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