Highly efficient orange phosphorescent organic light-emitting diodes with (4-(3,5-dimethylphenyl)-2-(m-tolyl)pyridine)-based iridium complex

被引：7

作者：

Cheon, Hyung Jin ^{[1
,2
]}

Joo, Chul Woong ^{[3
,4
]}

Lee, Da Yeon ^{[1
,2
]}

Huseynova, Gunel ^{[5
,6
]}

Lee, Jae-Hyun ^{[7
]}

Lee, Jonghee ^{[7
]}

Kim, Yun-Hi ^{[1
,2
]}

机构：

[1] Gyeongsang Natl Univ, Dept Chem, Jinju 52828, South Korea

[2] Gyeongsang Natl Univ, RINS, Jinju 52828, South Korea

[3] Elect & Telecommun Res Inst, Real Device Res Div, Daejeon 34129, South Korea

[4] Sungkyunkwan Univ, Sch Chem Engn, 2066,Seobu Ro, Suwon 16419, Gyeonggi, South Korea

[5] Hanbat Natl Univ, RIPE, Daejeon 34158, South Korea

[6] Hanbat Natl Univ, 3D Printing, Daejeon 34158, South Korea

[7] Hanbat Natl Univ, Dept Creat Convergence Engn, Daejeon 34158, South Korea

来源：

DYES AND PIGMENTS | 2021年 / 186卷

基金：

新加坡国家研究基金会;

关键词：

Organic light-emitting diodes; Orange emitter; Phosphorescent; External quantum efficiency; Iridium complex; EXTERNAL QUANTUM EFFICIENCY; DEEP-BLUE PHOSPHORESCENCE; EMITTERS;

D O I：

10.1016/j.dyepig.2020.109006

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

A new (4-(3,5-dimethylphenyl)-2-(m-tolyl)pyridine)-based iridium complex was synthesized for highly efficient orange phosphorescent organic light-emitting diodes (PhOLEDs). The effect of introduction of a methyl substituent into the 4-position of the phenyl ring in a phenylpyridine chelating ligand was studied. The PhOLEDs based on this newly-synthesized iridium complex exhibited maximum external quantum and current efficiencies of 20.33% and 61.16 cd/A, respectively. These respective values maintained over 15% and 48 cd/A even at a very high luminance of 15000 cd/m(2) with Commission Internationale de l'Eclairage coordinates of (0.49, 0.51).

引用

页数：8

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