Highly Efficient Electrofluorescence Material Based on Pure Organic Phosphor Sensitization*.
energy levels
energy transfer
organic electroluminescence
pure organic room-temperature phosphorescence
sensitization
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:
05 Jul 2021
05 Jul 2021
Historique:
received:
07
04
2021
pubmed:
28
4
2021
medline:
28
4
2021
entrez:
27
4
2021
Statut:
ppublish
Résumé
Pure organic room-temperature phosphorescence (RTP) materials are considered as potential candidates for replacing precious metal complexes to fabricate highly efficient organic light-emitting devices (OLEDs). However, applications of the reported RTP materials in OLEDs are seriously impeded by their low photoluminescence quantum yields (PLQYs) in a thin film state. To overcome these obstacles, we established a new strategy to construct highly efficient OLEDs based on a pure organic RTP material sensitized fluorescence emitter by selecting benzimidazole-triazine molecules (PIM-TRZ), 2,6-di(phenothiazinyl)naphthalene (β-DPTZN), and 5,6,11,12-tetraphenylnaphthacene (rubrene) as host, phosphor sensitizer, and fluorescent emitter, respectively. The perfect combination of host, phosphorescent sensitizer, and fluorescent emitter in the emitting layer ensure the outstanding performance of the devices with an external quantum efficiency (EQE) of 15.7 %.
Identifiants
pubmed: 33904242
doi: 10.1002/anie.202104755
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
15335-15339Subventions
Organisme : Innovative Research Group Project of the National Natural Science Foundation of China
ID : 21935005
Informations de copyright
© 2021 Wiley-VCH GmbH.
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The CCDC numbers of crystal-EtOH and crystal-PE are 2063597 and 2063598, respectively.