Issue 14, 2012
From the journal:

Journal of Materials Chemistry

A highly efficient red electrophosphorescent iridium(iii) complex containing phenyl quinazolineligand in polymer light-emitting diodes†

Qunbo Mei,*a   Lingxia Wang,a   Yuanhui Guo,a   Jiena Weng,a   Fang Yan,a   Bo Tiana  and  Bihai Tong*b  

* Corresponding authors

a Key Laboratory for Organic Electronics & Information Displays (KLOEID), Institute of Advanced Materials (IAM), Nanjing University of Posts and Telecommunications (NUPT), Nanjing 210046, China
E-mail: iamqbmei@njupt.edu.cn

b Institute of Molecular Engineering and Applied Chemistry, College of Metallurgy and Resources, Anhui University of Technology, Ma'anshan, Anhui 243002, P. R. China
E-mail: tongbihai@ahut.edu.cn

Abstract

A novel iridium(III) complex (PQxD)2Ir(pic) (HPQxD, N,N,2-triphenylquinazolin-4-amine; pic, 2-picolinic acid) was synthesized and used as a triplet emitter doped in a polymeric host in solution-processed electrophosphorescent light-emitting diodes. Polymer light-emitting devices (PLEDs) with the structure of ITO/PEDOT:PSS/(70% PVK + 30% PBD):x% (PQxD)2Ir(pic)/TPBI/CsF/Al were fabricated with high external quantum efficiency. The device based on (PQxD)2Ir(pic) furnishes a maximum external quantum efficiency of 18.44% and a luminance of 7107 cd m−2 at 8% doping concentration. The Commission International de L'Eclairage (CIE) coordinates of the complex were (0.619,0.376).

Graphical abstract: A highly efficient red electrophosphorescent iridium(iii) complex containing phenyl quinazoline ligand in polymer light-emitting diodes

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Article information

DOI
https://doi.org/10.1039/C2JM15160J
Article type
Paper
Submitted
12 Oct 2011
Accepted
22 Jan 2012
First published
28 Feb 2012

J. Mater. Chem., 2012,22, 6878-6884

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A highly efficient red electrophosphorescent iridium(III) complex containing phenyl quinazoline ligand in polymer light-emitting diodes

Q. Mei, L. Wang, Y. Guo, J. Weng, F. Yan, B. Tian and B. Tong, J. Mater. Chem., 2012, 22, 6878 DOI: 10.1039/C2JM15160J

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