Emission color management of dual emitting organic light-emitting diodes by selective switching of phosphorescence through host engineering

A device approach to manage the emission color of the organic light-emitting diodes (OLEDs) which show two emission processes of thermally activated delayed fluorescence (TADF) and phosphorescence was developed by engineering the host of the emitter. The emitting material was phenyl(10-phenyl-10H-ph...

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Bibliographic Details
Published inJournal of industrial and engineering chemistry (Seoul, Korea) Vol. 98; pp. 270 - 274
Main Authors Jang, Ho Jin, Kim, Cho Rong, Lee, Jun Yeob
Format Journal Article
LanguageEnglish
Published Elsevier B.V 25.06.2021
한국공업화학회
Subjects
Emission color
OLED
Phosphorescence
TADF
화학공학
TADF
Emission color
OLED
Phosphorescence
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ISSN1226-086X
1876-794X
DOI10.1016/j.jiec.2021.03.044

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Summary:A device approach to manage the emission color of the organic light-emitting diodes (OLEDs) which show two emission processes of thermally activated delayed fluorescence (TADF) and phosphorescence was developed by engineering the host of the emitter. The emitting material was phenyl(10-phenyl-10H-phenoselenazin-3-yl)methanone (PSeBz) which emitted at 496 nm by TADF process and at 559 nm by phosphorescence process. The phosphorescence of the PSeBz emitter was selectively switched by the host because the triplet excitons can be intentionally quenched by the low triplet energy host. Therefore, the color coordinate of the OLEDs could be tuned from (0.35, 0.52) to (0.41, 0.52) by just changing the host of the PSeBz emitter.
ISSN:1226-086X
1876-794X
DOI:10.1016/j.jiec.2021.03.044