High-efficiency blue phosphorescent organic light-emitting diodes using a carbazole and carboline-based host material

A novel bipolar host 9-(4-(9H-pyrido[2,3-b]indol-9-yl)phenyl)-9H-3,9'-bicarbazole (pBCb2Cz) was prepared for high efficiency blue phosphorescent organic light-emitting diodes (PhOLEDs), a high triplet energy (ET) material, employing electron-deficient α-carboline. pBCb2Cz (ET = 2.93 eV) was eff...

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Bibliographic Details
Published in:Chemical communications (Cambridge, England) England), 2013-08, Vol.49 (60), p.6788-6790
Main Authors: Kim, Sun Jae, Kim, Young Jae, Son, Young Hoon, Hur, Jung A, Um, Hyun Ah, Shin, Jicheol, Lee, Tae Wan, Cho, Min Ju, Kim, Jung Keun, Joo, Sunghoon, Yang, Joong Hwan, Chae, Gee Sung, Choi, Kihang, Kwon, Jang Hyuk, Choi, Dong Hoon
Format: Article
Language:English
Subjects:
Carbazoles
Energy management
Organic light-emitting diodes
Quantum efficiency
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Summary:A novel bipolar host 9-(4-(9H-pyrido[2,3-b]indol-9-yl)phenyl)-9H-3,9'-bicarbazole (pBCb2Cz) was prepared for high efficiency blue phosphorescent organic light-emitting diodes (PhOLEDs), a high triplet energy (ET) material, employing electron-deficient α-carboline. pBCb2Cz (ET = 2.93 eV) was effective as a host material for FIrpic- and FCNIrpic-based blue PhOLEDs, and highest quantum efficiencies of 23.0 and 16.2%, respectively, were achieved.
ISSN:1359-7345
1364-548X
DOI:10.1039/c3cc42569j