Solution-processed organic light-emitting diodes based on yellow-emitting cationic iridium(III) complexes bearing cyclometalated carbene ligands

被引：17

作者：

Zhang, Fuli ^{[1
]}

Si, Changfeng ^{[2
]}

Wei, Donghui ^{[3
]}

Wang, Shuangshuang ^{[1
]}

Zhang, Depan ^{[1
]}

Li, Suzhi ^{[1
]}

Li, Zhongyi ^{[1
]}

Zhang, Fuqiang ^{[1
]}

Wei, Bin ^{[2
]}

Cao, Guangxiu ^{[1
]}

Zhai, Bin ^{[1
]}

机构：

[1] Shangqiu Normal Univ, Coll Chem & Chem Engn, Shangqiu 476000, Peoples R China

[2] Shanghai Univ, Sch Mat Sci & Engn, Shanghai 200072, Peoples R China

[3] Zhengzhou Univ, Coll Chem & Mol Engn, Zhengzhou 450001, Peoples R China

来源：

DYES AND PIGMENTS | 2016年 / 134卷

基金：

中国国家自然科学基金;

关键词：

Organic light-emitting diode; Yellow light emission; Cationic iridium complex; Cyclometalated carbene ligand; PHOSPHORESCENT EMISSION AIPE; BLUE-GREEN; ELECTROCHEMICAL-CELLS; METAL-COMPLEXES; NEAR-UV; RED; ELECTROPHOSPHORESCENCE; ELECTROLUMINESCENCE; EMITTERS; ORIGIN;

D O I：

10.1016/j.dyepig.2016.08.005

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Two new cationic iridium complexes bearing cyclometalated carbene ligands have been prepared, and the photophysical and electrochemical properties have been investigated. In degassed acetonitrile solutions, these complexes exhibit yellow light emission with peaks at 591 and 579 nm, respectively. Both photophysical properties and quantum chemical calculations indicate that photoluminescence of these complexes are mainly from triplet charge-transfer excited states. Solution-processed organic light emitting diodes based on these complexes exhibit yellow electroluminescences with the maximum current efficiencies of 17.42 and 6.36 cd A(-1) and Commission Internationale d'Enclairage(x, y) coordinates (CIEx,y) of (0.47, 0.51) and (0.51, 0.47), respectively. (C) 2016 Elsevier Ltd. All rights reserved.

引用

页码：465 / 471

页数：7