| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 175991 | Dyes and Pigments | 2015 | 5 Pages |
Abstract
•Carbazole and phosphine oxide based high triplet energy host material.•High triplet energy for blue devices.•High quantum efficiency in blue phosphorescent organic light-emitting diodes.
A novel bipolar compound with a thiophene modified 9-phenylcarbazole and phosphine oxide moieties, (5-(4-(9H-carbazol-9-yl)phenyl)thiophen-2-yl)diphenylphosphine oxide (CPTPO), was synthesized and characterized as a high triplet energy host material. Bipolar charge transport character and a high triplet energy of 2.72 eV of CPTPO allowed the development of blue phosphorescent organic light-emitting diodes with an external quantum efficiency of 18.4%.
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Related Topics
Physical Sciences and Engineering
Chemical Engineering
Chemical Engineering (General)
Authors
Sang Kyu Jeon, Bodakuntla Thirupathaiah, Choongik Kim, Kwon Taek Lim, Jun Yeob Lee, SungYong Seo,