White electroluminescence from polyfluorene chemically doped with 1,8-napthalimide moieties

被引：136

作者：

Tu, GL ^{[1
]}

Zhou, QG ^{[1
]}

Cheng, YX ^{[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：

APPLIED PHYSICS LETTERS | 2004年 / 85卷 / 12期

基金：

中国国家自然科学基金;

关键词：

D O I：

10.1063/1.1793356

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

An efficient white light-emitting polymer was developed with blue polyfluorene (PFO) chemically doped with orange fluorescent 1, 8-naphthalimide moieties. The emission spectrum can be easily tuned by varying the content of 1, 8-naphthalimide moieties. A white polymeric light-emitting diode (WPLED) with a structure of indium tin oxide (ITO)/the complex of (3,4-ethylenedioxythiophene) and polystyrene sulfonic acid (PEDOT)/polymer/Ca/Al showed a current efficiency of 5.3 cd/A and a power efficiency of 2.8 Lm/W at 6 V with the Commission Internationale de L'Eclairage (CIE) coordinates at (0.25,0.35). Moreover, the WPLED from the copolymer showed a very stable white light emission at different driving voltage and brightness. The CIE coordinates of the WPLED were (0.25, 0.35), (0.26, O.36), and (0.26, 0.36) under driving voltages of 6, 8, and 10 V, corresponding to the brightness of 82, 3555, and 7530 cd/m(2), respectively. This approach for realization of white light emission is promising over the polymer blending system in terms of both efficiency and color stability. (C) 2004 American Institute of Physics.

引用

页码：2172 / 2174

页数：3

共 25 条

[1] Naphthalimide side-chain polymers for organic light-emitting diodes: Band-offset engineering and role of polymer thickness [J].