High-Performance Ultraviolet Organic Light-Emitting Diode Enabled by High-Lying Reverse Intersystem Crossing.
OLEDs
UV emission
hybridized local and charge-transfer state
record-high EQE
reverse intersystem crossing
Journal
Angewandte Chemie (International ed. in English)
ISSN: 1521-3773
Titre abrégé: Angew Chem Int Ed Engl
Pays: Germany
ID NLM: 0370543
Informations de publication
Date de publication:
04 Oct 2021
04 Oct 2021
Historique:
revised:
05
08
2021
received:
27
06
2021
pubmed:
14
8
2021
medline:
14
8
2021
entrez:
13
8
2021
Statut:
ppublish
Résumé
Ultraviolet (UV) organic emitters that can open up applications for future organic light-emitting diodes (OLEDs) are of great value but rarely developed. Here, we report a high-quality UV emitter with hybridized local and charge-transfer (HLCT) excited state and its application in UV OLEDs. The UV emitter, 2BuCz-CNCz, shows the features of low-lying locally excited (LE) emissive state and high-lying reverse intersystem crossing (hRISC) process, which helps to balance the color purity and exciton utilization of UV OLED. Consequently, the OLED based on 2BuCz-CNCz exhibits not only a desired narrowband UV electroluminescent (EL) at 396 nm with satisfactory color purity (CIE
Identifiants
pubmed: 34387938
doi: 10.1002/anie.202108540
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
22241-22247Subventions
Organisme : National Natural Science Foundation of China
ID : 21788102 and 21975077
Organisme : National Key R&D Program of China
ID : 2017YFE0132200
Organisme : Open Research Project of Military Logistics Support Department
ID : BLB19J008
Organisme : the Fundamental Research Funds for the Central Universities
ID : 2019ZD04
Organisme : Natural Science Foundation of Guangdong Province
ID : 2020A1515011542
Organisme : Fund of Guangdong Provincial Key Laboratory of Luminescence from Molecular Aggregates
ID : 2019B030301003
Informations de copyright
© 2021 Wiley-VCH GmbH.
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