White electroluminescence from a single-polymer system with simultaneous two-color emission: Polyfluorene as blue host and 2,1,3-benzothiadiazole derivatives as orange dopants on the side chain

被引：118

作者：

Liu, Jun ^{[1
]}

Guo, Xin ^{[1
]}

Bu, Laju ^{[1
]}

Xie, Zhiyuan ^{[1
]}

Cheng, Yanxiang ^{[1
]}

Geng, Yanhou ^{[1
]}

Wang, Lixiang ^{[1
]}

Jing, Xiabin ^{[1
]}

Wang, Fosong ^{[1
]}

机构：

[1] Chinese Acad Sci, Grad Sch Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Peoples R China

来源：

ADVANCED FUNCTIONAL MATERIALS | 2007年 / 17卷 / 12期

关键词：

D O I：

10.1002/adfm.200600988

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Four single polymers with two kinds of attachment of orange chromophore to blue polymer host for white electroluminescence (EL) were designed. The effect of the side-chain attachment and main-chain attachment on the EL efficiencies of the resulting polymers was compared. The side-chain-type single polymers are found to exhibit more efficient white EL than that of the main-chain-type single polymers. Based on the side-chain-type white single polymer with 4-(4-alkyloxy-phenyl)-7-(4-diphenylamino-phenyl)-2,1,3-benzothiadiazoles as the orange-dopant unit and polyfluorene as the blue polymer host, white EL with simultaneous orange (lambda(max) = 545 nm) and blue emission (lambda(max) = 432 nm/460 nm) is realised. A single-layer device (indium tin oxide/poly(3,4-ethylenedioxythiophene)/polymer/Ca/Al) made of these polymers emits white light with the Commission Internationale de l'Eclairage coordinates of (0.30,0.40), possesses a turn-on voltage of 3.5 V, luminous efficiency of 10.66 cd A(-1), power efficiency of 6.68 lm W-1, and a maximum brightness of 21240 cd m(-2).

引用

页码：1917 / 1925

页数：9

共 53 条

[1] White polymeric light-emitting diode based on a fluorene polymer/Ir complex blend system [J].