Premium
Color tunability in non‐doped single‐layer PLEDs from a carbazole‐based electroluminescent polymer
Author(s) -
Liu Yingliang,
Cao Huayu,
Xin Yuanrong,
Li Jianghui,
Chen Zhijian,
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.1083
Subject(s) - carbazole , electroluminescence , materials science , polymer , moiety , doping , layer (electronics) , spin coating , conjugated system , phenylene , chemical engineering , polymer chemistry , coating , photochemistry , organic chemistry , optoelectronics , composite material , chemistry , engineering
A conjugated polymer with a carbazole moiety, poly(3,6‐divinylene‐ N ‐octyl‐carbazole‐ p ‐phenylene), was synthesized by Wittig reaction. The polymer can be dissolved in common organic solvents such as THF, chloroform, etc. Using this polymer as an active layer, single‐layer non‐doped PLEDs with different thicknesses were fabricated by a spin‐coating approach. The results suggested that electroluminescence spectra are changed with the film thickness of the polymer emitter. Fortunately, CIE 1931 coordinate values are moved to the white‐light region only by changing the film thickness. Copyright © 2008 John Wiley & Sons, Ltd.