Indium-tin-oxide-free tris(8-hydroxyquinoline) Al organic light-emitting diodes with 80% enhanced power efficiency

被引：26

作者：

Cai, Min ^{[3
,4
]}

Xiao, Teng ^{[3
,4
]}

Liu, Rui ^{[3
,4
]}

Chen, Ying ^{[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, Dept Phys & Astron, Ames, IA 50011 USA

[4] Iowa State Univ, Ames Lab, US DOE, Ames, IA 50011 USA

来源：

APPLIED PHYSICS LETTERS | 2011年 / 99卷 / 15期

关键词：

HIGHLY CONDUCTIVE POLYMER; FILMS;

D O I：

10.1063/1.3634210

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Efficient indium tin oxide (ITO)-free small molecule organic light-emitting diodes (SMOLEDs) with multilayered highly conductive poly(3,4-ethylenedioxy thiophene):poly(styrenesulfonate) (PEDOT:PSS) as the anode are demonstrated. PEDOT:PSS/MoO3/N,N'-diphenyl- N,N'-bis (1-naphthylphenyl)-1,1'-biphenyl-4,4'-diamine (NPD)/tris(8-hydroxyquinoline) Al (Alq(3))/4,7-diphenyl-1,10-phenanthroline (BPhen)/LiF/Al SMOLEDs exhibited a peak power efficiency of 3.82 lm/W, 81% higher than that of similar ITO-based SMOLEDs (2.11 lm/W). The improved performance is believed to be due to the higher work function, lower refractive index, and decreased surface roughness of PEDOT:PSS vs ITO, and to Ohmic hole injection from PEDOT:PSS to the NPD layer via the MoO3 interlayer. The results demonstrate that PEDOT:PSS can substitute TO in SMOLEDs with strongly improved device performance. (C) 2011 American Institute of Physics. [doi :10.1063/1.3634210]

引用

页数：3

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