有机发光二极管
磷光
铱
量子效率
材料科学
共发射极
光电子学
准分子
二极管
磷光有机发光二极管
偶极子
苯
图层(电子)
光学
物理
纳米技术
化学
荧光
催化作用
有机化学
量子力学
生物化学
作者
Hyun Mu Shin,Sunghun Lee,Kwon‐Hyeon Kim,Chang‐Ki Moon,Sung Jin Yoo,Jeonghwan Lee,Jang‐Joo Kim
标识
DOI:10.1002/adma.201400955
摘要
A high-efficiency blue-emitting organic light-emitting diode (OLED) approaching theoretical efficiency using an exciplex-forming co-host composed of N,N'-dicarbazolyl-3,5-benzene (mCP) and bis-4,6-(3,5-di-3-pyridylphenyl)- 2-methylpyrimidine (B3PYMPM) is fabricated. Iridium(III)bis[(4,6-difluorophenyl)- pyridinato-N,C2']picolinate (FIrpic) is used as the emitter, which turns out to have a preferred horizontal dipole orientation in the emitting layer. The OLED shows a maximum external quantum efficiency of 29.5% (a maximum current efficiency of 62.2 cd A(-1) ), which is in perfect agreement with the theoretical prediction.
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