Molecular design and synthetic approach to C2,C3,C4-modified carbazoles: high triplet energy bipolar host materials for efficient blue phosphorescent organic light emitting diodes

Herein, we report the first examples of the design of and synthetic approach to C3/C4 and C2/C3/C4-modified carbazole based high triplet energy bipolar host materials for blue phosphorescent organic light emitting diodes and demonstrated excellent device performance with the maximum external quantum...

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Bibliographic Details
Published in:Chemical communications (Cambridge, England) England), 2019-07, Vol.55 (56), p.8178-8181
Main Authors: Konidena, Rajendra Kumar, Lee, Kyung Hyung, Lee, Jun Yeob
Format: Article
Language:English
Subjects:
Carbazoles
Current efficiency
Design modifications
NMR
Nuclear magnetic resonance
Organic light emitting diodes
Phosphorescence
Quantum efficiency
Spectral emittance
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Summary:Herein, we report the first examples of the design of and synthetic approach to C3/C4 and C2/C3/C4-modified carbazole based high triplet energy bipolar host materials for blue phosphorescent organic light emitting diodes and demonstrated excellent device performance with the maximum external quantum efficiency as high as 25.3% and current efficiency of 48.1 cd A −1 . Herein, we report the first examples of the design of and synthetic approach to C3/C4 and C2/C3/C4-modified carbazole based high triplet energy bipolar host materials for blue phosphorescent organic light emitting diodes.
ISSN:1359-7345
1364-548X
DOI:10.1039/c9cc03843d