A new multifunctional fluorenyl carbazole hybrid for high performance deep blue fluorescence, orange phosphorescent host and fluorescence/phosphorescence white OLEDs

被引：20

作者：

Wu, Chuan ^{[1
,2
]}

Tao, Silu ^{[1
]}

Chen, Mingming ^{[1
]}

Mo, Hin-Wai ^{[2
]}

Ng, Tsz Wai ^{[2
]}

Liu, Xiaoke ^{[3
,4
]}

Zhang, Xiaohong ^{[3
,4
]}

Zhao, Weiming ^{[5
]}

Lee, Chun-Sing ^{[2
]}

机构：

[1] Univ Elect Sci & Technol China, Sch Optoelect Informat, Chengdu 610054, Peoples R China

[2] City Univ Hong Kong, Dept Phys & Mat Sci, Ctr Superdiamond & Adv Films COSDAF, Kowloon, Hong Kong, Peoples R China

[3] Chinese Acad Sci, Tech Inst Phys & Chem, Nanoorgan Photoelect Lab, Beijing 100190, Peoples R China

[4] Chinese Acad Sci, Tech Inst Phys & Chem, Key Lab Photochem Convers & Optoelect Mat, Beijing 100190, Peoples R China

[5] Dongguan LITEWELL OLED Technol Inc, Dongguan 523656, Peoples R China

来源：

DYES AND PIGMENTS | 2013年 / 97卷 / 02期

基金：

中国国家自然科学基金;

关键词：

Organic light-emitting devices; Deep blue emission; Multifunctional molecule; LIGHT-EMITTING-DIODES; TRIPLET EXCITONS; DEVICES; EMITTERS; LIGANDS; SINGLET; DOPANT;

D O I：

10.1016/j.dyepig.2012.12.028

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

A new multifunctional host material, 3,3'-(2,7-di(quinolin-8-yl)-9H-fluorene-9,9-diyl)bis(9-phenyl-9H-carbazole) has been designed, synthesized and used in high performance OLEDs. This tetrasubstituted fluorene was found to have good morphological and thermal stability with a high glass transition temperature of 192 degrees C and a decomposition temperature of 480 degrees C. A non-doped tri-layer blue fluorescent device based on this tetrasubstituted fluorene shows a deep blue emission with a Commission Internationale de L'Eclairage coordinates of (0.16, 0.10) and a maximum power efficiency of 1.1 lm/W. An orange phosphorescent device using this tetrasubstituted fluorene as a host in conjunction with an iridium complex as dopant exhibits a maximum power efficiency of 21.0 lm/W, which is much higher than that of a biscarbazolylbiphenyl-based control device (11.5 lm/W) with the same device structure. Furthermore, by using the tetrasubstituted fluorene as a blue florescent emitter and a host for phosphorescent dopant, a white emitting OLED with a maximum power efficiency of 22.5 lm/W and CIE coordinates of (0.38, 0.33) were obtained. These results show that this tetrasubstituted fluorene is a versatile multifunctional material for OLED applications. (C) 2013 Elsevier Ltd. All rights reserved.

引用

页码：273 / 277

页数：5

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