Highly Efficient Organic Light-Emitting Diodes with Phosphorescent Emitters Having High Quantum Yield and Horizontal Orientation of Transition Dipole Moments

被引：318

作者：

Kim, Kwon-Hyeon ^{[1
,2
]}

Moon, Chang-Ki ^{[3
,4
]}

Lee, Jeong-Hwan ^{[1
,2
]}

Kim, Sei-Yong ^{[3
,4
]}

Kim, Jang-Joo ^{[1
,2
,3
,4
]}

机构：

[1] Seoul Natl Univ, WCU Hybrid Mat Program, Dept Mat Sci & Engn, Seoul 151744, South Korea

[2] Seoul Natl Univ, Ctr Organ Light Emitting Diode, Seoul 151744, South Korea

[3] Seoul Natl Univ, Dept Mat Sci & Engn, Seoul 151742, South Korea

[4] Seoul Natl Univ, Ctr OLED, Seoul 151742, South Korea

来源：

ADVANCED MATERIALS | 2014年 / 26卷 / 23期

关键词：

EMISSION;

D O I：

10.1002/adma.201305733

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Ancillary ligands in heteroleptic iridium complexes significantly influence the orientation of the transition dipole moments. Ir(ppy)(3), a homoleptic iridium complex, exhibits isotropic dipole orientation, whereas the heteroleptic Ir complexes of Ir(ppy)(2)tmd show a highly preferred dipole orientation (78%) in the horizontal direction. In addition, we demonstrate an unprecedented highly efficient green OLED exhibiting an EQE of 32.3% and a power efficiency of 142.5 lm/W by using an emitter with high quantum yield and horizontally oriented dipoles.

引用

页码：3844 / 3847

页数：4

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