High-efficiency red electroluminescence from europium complex containing a neutral dipyrido(3,2-a:2′,3′-c)phenazine ligand in PLEDs

被引：23

作者：

Liu, Yu ^{[1
]}

Wang, Yafei ^{[1
]}

He, Juan ^{[1
]}

Mei, Qingqing ^{[1
]}

Chen, Kai ^{[1
]}

Cui, Jiaojiao ^{[1
]}

Li, Chun ^{[2
]}

Zhu, Meixiang ^{[1
]}

Peng, Junbiao ^{[2
]}

Zhu, Weiguo ^{[1
]}

Cao, Yong ^{[2
]}

机构：

[1] Xiangtan Univ, Minist Educ, Dept Chem, Key Lab Environm Friendly Chem & Applicat, Xiangtan 411105, Peoples R China

[2] S China Univ Technol, Inst Polymer Optoelect Mat & Devices, Guangzhou 510640, Guangdong, Peoples R China

来源：

ORGANIC ELECTRONICS | 2012年 / 13卷 / 06期

基金：

中国国家自然科学基金;

关键词：

Europium(III) complex; Optophysical properties; Electroluminescence; Polymer light-emitting devices; ENERGY-TRANSFER; IRIDIUM COMPLEX; BRIGHT; DYE; ELECTROPHOSPHORESCENCE; LUMINESCENCE; EMITTER; SINGLET; STATE; HOST;

D O I：

10.1016/j.orgel.2012.02.024

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In order to obtain high-efficiency monochromatic red emission in polymer light-emitting devices, a tris(dibenzoylmethanato)(dipyrido(3,2-a:2',3'-c) phenazine) europium [Eu(DBM)(3) (DPPZ)] doped single-emissive-layer devices were fabricated using a blend of poly(9,9-dioctyl- fluorence) and 2-tert-butyl-phenyl-5-biphenyl-1,3,4-oxadiazole as a host matrix by solution process. Significantly improved electro-luminescent properties with sharp red emission at 611.5 nm were displayed in the Eu(DBM)(3)(DPPZ)-doped devices at dopant concentrations from 1 to 8 wt.%. The highest luminance up to 1783 cd/m(2) at 2 wt.% dopant concentration, as well as the maximum external quantum efficiency of 2.5% and current efficiency of 3.8 cd/A were obtained at 1 wt.% dopant concentration. (C) 2012 Elsevier B.V. All rights reserved.

引用

页码：1038 / 1043

页数：6

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