Efficient blue phosphorescent organic light emitting diodes with host engineering

被引：7

作者：

Kim, Young Jae ^{[1
]}

Son, Young Hoon ^{[1
]}

Kim, Shin Hye ^{[1
]}

Lee, Jung Min ^{[1
]}

Lampande, Raju ^{[1
]}

Noh, Chang Ho ^{[2
]}

Kim, Sung Han ^{[2
]}

Kwon, Jang Hyuk ^{[1
]}

机构：

[1] Kyung Hee Univ, Dept Informat Display, Seoul 130701, South Korea

[2] Samsung Elect, Samsung Adv Inst Technol, Suwon 443803, Gyeonggi Do, South Korea

来源：

CURRENT APPLIED PHYSICS | 2015年 / 15卷 / 01期

关键词：

Organic light-emitting diode; Phosphorescent; Blue; Host; Efficiency; HOLE TRANSPORT; ELECTRON; MOBILITY; DEVICE;

D O I：

10.1016/j.cap.2014.10.027

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We demonstrate as much as possible blue color and high efficiency phosphorescent organic light-emitting diodes (PHOLEDs) by using well-known iridium(III)bis[(3,5-difluoro-4-cyanophenyl)-pyridinato-N,C']picolinate (FCNIrpic) dopant and previously reported good host materials. For the control of blue color and efficiency, various host materials, 1,3-bis(carbazole-9-yl) benzene (mCP), 9-(3-(9H-carbazole-9-yl)phenyl)-3-(dibromophenylphosphoryl)-9H-carbazole (mCPPO1), and 2,8-di(9H-carbazol-9-yl)dibenzo[b,d]furan (DFCz), bis(4-(N-carbazole)phenyl)dimethylsilane (2MCBP) are selected and investigated their performances. A maximum external quantum efficiency (EQE) of 23.9% and power efficiency of 30.2 lm/W are achieved from 2MCBP device with Commision Internationale de L'Eclairage color coordinates (CIEx,y) of (0.14, 0.21). The deepest color with color coordinate of (0.14, 0.19) is obtained for the mCP device. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：42 / 47

页数：6

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