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Synthesis of an electroluminescent polymer and its non‐doped light‐emitting diodes with stable green emission
Author(s) -
Liu Yingliang,
Cao Huayu,
Li Jianghui,
Chen Zhijian,
Xiao Lixin,
Gong Qihuang,
Cao Shaokui
Publication year - 2008
Publication title -
polymers for advanced technologies
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.61
H-Index - 90
eISSN - 1099-1581
pISSN - 1042-7147
DOI - 10.1002/pat.1212
Subject(s) - electroluminescence , materials science , tetrahydrofuran , dichloromethane , cyclic voltammetry , pedot:pss , polymer , oled , doping , gel permeation chromatography , analytical chemistry (journal) , layer (electronics) , optoelectronics , chemistry , organic chemistry , electrode , electrochemistry , nanotechnology , composite material , solvent
An electroluminescent polymer was synthesized by Wittig condensation and characterized by the measurements of 1 H‐NMR, IR, gel permeation chromatography (GPC), UV–Vis, PL, and cyclic voltammetry (CV). The polymer can be dissolved in common organic solvents such as tetrahydrofuran (THF), chloroform, and dichloromethane. The electroluminescent investigation showed that the non‐doped devices with a double‐layer configuration (ITO/PEDOT:PSS/Polymer/Mg:Ag) have a stable green emission property. The maximum luminance of the annealed device reaches 2317 cd/m 2 . The emission maximum and the CIE 1931 coordinate values are respectively stabilized at 552 nm and near ( x , y ) = (0.43, 0.55) with different voltages. Copyright © 2008 John Wiley & Sons, Ltd.