High Quantum Efficiency Blue Phosphorescent Organic Light-Emitting Diodes Using 6‑Position-Modified Benzofuro[2,3-b]pyridine Derivatives

High quantum efficiency blue phosphorescent organic light-emitting diodes were developed using 6- position modified benzofuro[2,3-b]pyridine derivatives as host materials. Two high triplet energy host materials derived from benzofuro[2,3-b]pyridine modified with carbazole or 9-phenylcarbazole were s...

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Bibliographic Details
Published in:ACS applied materials & interfaces 2013-03, Vol.5 (6), p.2169-2173
Main Authors: Lee, Chil Won, Kim, Jung-Keun, Joo, Sung Hoon, Lee, Jun Yeob
Format: Article
Language:English
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Summary:High quantum efficiency blue phosphorescent organic light-emitting diodes were developed using 6- position modified benzofuro[2,3-b]pyridine derivatives as host materials. Two high triplet energy host materials derived from benzofuro[2,3-b]pyridine modified with carbazole or 9-phenylcarbazole were synthesized and the device performances of the host materials were investigated. A high quantum efficiency of 24.3% was achieved using the benzofuro[2,3-b]pyridine host materials due to good charge balance and energy transfer.
ISSN:1944-8244
1944-8252
DOI:10.1021/am303256c