High Quantum Efficiency Blue Phosphorescent Organic Light-Emitting Diodes Using 6-Position-Modified Benzofuro[2,3-b]pyridine Derivatives
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- 作者：Chil Won Lee ; Jung-Keun Kim ; Sung Hoon Joo ; Jun Yeob Lee
- 刊名：ACS Applied Materials & Interfaces
- 出版年：2013
- 出版时间：March 27, 2013
- 年：2013
- 卷：5
- 期：6
- 页码：2169-2173
- 全文大小：277K
- 年卷期：v.5,no.6(March 27, 2013)
- ISSN：1944-8252
文摘
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.