Highly efficient pure-white-light-emitting diodes from a single polymer: Polyfluorene with naphthalimide moieties

被引：203

作者：

Tu, GL ^{[1
]}

Mei, CY ^{[1
]}

Zhou, QG ^{[1
]}

Cheng, YX ^{[1
]}

Geng, YH ^{[1
]}

Wang, LX ^{[1
]}

Ma, DG ^{[1
]}

Jing, XB ^{[1
]}

Wang, FS ^{[1
]}

机构：

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

来源：

ADVANCED FUNCTIONAL MATERIALS | 2006年 / 16卷 / 01期

关键词：

D O I：

10.1002/adfm.200500028

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Light-emitting diodes exhibiting efficient pure-white-light electroluminescence have been successfully developed by using a single polymer: polyfluorene derivatives with 1,8-naphthalimide chromophores chemically doped onto the polyfluorene backbones. By adjusting the emission wavelength of the 1,8-naphthalimide components and optimizing the relative content of 1,8-naphthalimide derivatives in the resulting polymers, white-light electroluminescence from a single polymer, as opposed to a polymer blend, has been obtained in a device with a configuration of indium tin oxide/poly(3,4-ethyleiledioxythiophene)(50 nm)/polymer(80 nm)/Ca(10 nm)/Al(100 nm). The device exhibits Commission Internationale de I'Eclairage coordinates of (0.32,0.36), a maximum brightness of 11900 cd m(-2), a current efficiency of 3.8 cd A(-1), a power efficiency of 2.0 lm W-1. an external quantum efficiency of 1.50 %, and quite stable color coordinates at different driving voltages, even at high luminances of over 5000 cd m(-2).

引用

页码：101 / 106

页数：6

共 35 条

[1] High efficiency single dopant white electrophosphorescent light emitting diodes [J].