Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
6598619 | Dyes and Pigments | 2018 | 7 Pages |
Abstract
A high triplet energy core structure, carbazole-dibenzothiophene, was designed and synthesized as a building block of high triplet energy host materials for blue phosphorescent organic light-emitting diodes. The carbazole and dibenzothiophene were interconnected via 3- position of carbazole and 2- position of dibenzothiophene not to sacrifice the high triplet energy the two units. Three compounds with phenyl, dibenzothiophene and 9-phenylcarbazole functional groups as side groups of the carbazole-dibenzothiophene main structure worked as hosts providing high triplet energy over 2.80â¯eV and the host with a dibenzothiophene substituent achieved high external quantum efficiency over 20% in blue phosphorescent organic light-emitting diodes.
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Physical Sciences and Engineering
Chemical Engineering
Chemical Engineering (General)
Authors
Sung Yong Byeon, Si Hyun Han, Jun Yeob Lee,