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Purely organic phosphorescent organic light emitting diodes using alkyl modified phenoselenazine

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Title
Purely organic phosphorescent organic light emitting diodes using alkyl modified phenoselenazine
Author(s)
Kim, Cho Long; Jinhoon Jeong; Jang, Ho Jin; Lee, Kyung Hyung; Seoung-Tae Kim; Mu-Hyun Baik; Lee, Jun Yeob
Publication Date
2021-07
Journal
Journal of Materials Chemistry C, v.9, no.26, pp.8233 - 8238
Publisher
Royal Society of Chemistry
Abstract
© The Royal Society of Chemistry 2021.Purely organic phosphorescent emitters have been developed with the incorporation of alkyl substituents into theN-phenylphenoselenazine core. The new emitter displayed efficient phosphorescence in amorphous film and featured pure phosphorescence in electroluminescence devices due to strong spin-orbit coupling for triplet to singlet transition. The steric bulk of the alkyl substituent, which could hamper triplet-exciton-quenching, is found to be essential for high efficiency of the device, and thetert-butyl group induces the highest external quantum efficiency (EQE) of 9.0%.
URI
https://pr.ibs.re.kr/handle/8788114/10113
DOI
10.1039/d1tc01741a
ISSN
2050-7526
Appears in Collections:
Center for Catalytic Hydrocarbon Functionalizations(분자활성 촉매반응 연구단) > 1. Journal Papers (저널논문)
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