Extremely Efficient Indium-Tin-Oxide-Free Green Phosphorescent Organic Light-Emitting Diodes

被引:101
|
作者
Cai, Min [3 ,4 ]
Ye, Zhuo [3 ,4 ]
Xiao, Teng [3 ,4 ]
Liu, Rui [3 ,4 ]
Chen, Ying [3 ,4 ]
Mayer, Robert W. [1 ,2 ]
Biswas, Rana [1 ,2 ]
Ho, Kai-Ming [3 ,4 ]
Shinar, Ruth [1 ,2 ]
Shinar, Joseph [3 ,4 ]
机构
[1] Iowa State Univ, Microelect Res Ctr, Ames, IA 50011 USA
[2] Iowa State Univ, Dept Elect & Comp Engn, Ames, IA 50011 USA
[3] Iowa State Univ, Ames Lab USDOE, Ames, IA 50011 USA
[4] Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA
关键词
phosphorescent OLEDs; ITO-free PHOLEDs; PEDOT:PSS multilayered anode; high efficiency OLEDs; weak microcavity effect; HIGHLY CONDUCTIVE POLYMER; SOLAR-CELLS; ELECTROLUMINESCENT DEVICES; QUANTUM EFFICIENCY; EMISSION; ELECTRODES; MICROCAVITIES; ENHANCEMENT; SIMULATION; DOPANTS;
D O I
10.1002/adma.201202035
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
This paper demonstrates extremely efficient (eta(P,max) = 118 lm W-1) ITO-free green phosphorescent OLEDs (PHOLEDs) with multilayered, highly conductive poly(3,4-ethylenedioxythiophene): poly(styrenesulfonate) (PEDOT: PSS) films as the anode. The efficiency is obtained without any outcoupling-enhancing structures and is 44% higher than the 82 lm W-1 of similar optimized ITO-anode PHOLEDs. Detailed simulations show that this improvement is due largely to the intrinsically enhanced outcoupling that results from a weak microcavity effect.
引用
收藏
页码:4337 / +
页数:7
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