A morphologically stable host material for efficient phosphorescent green and red organic light emitting devices

被引：43
|
作者：
Ho, Meng-Huan [1 ]
Balaganesan, Banumathy [1 ]
Chu, Ta-Ya [2 ]
Chen, Teng-Ming [1 ]
Chen, Chin H. [3 ]
机构：
[1] Natl Chiao Tung Univ, Dept Appl Chem, Hsinchu 300, Taiwan
[2] Natl Chiao Tung Univ, Dept Electrophys, Hsinchu 300, Taiwan
[3] Natl Chiao Tung Univ, Display Inst, Microelect & Informat Syst Res Ctr, Hsinchu 300, Taiwan
来源：
THIN SOLID FILMS | 2008年 / 517卷 / 02期
关键词：
Organic electroluminescent devices; Phosphorescence; Host material; Carbazole;
D O I：
10.1016/j.tsf.2008.07.005
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A carbazole-based host material, 4,4'-N,N'-[di(3, 6-di(t-butyl)carbazole]biphenyl (ttbCBP), with four t-butyl steric spacers on peripheral carbazole moieties was effectively synthesized through Friedel-Crafts Alkylation. Owing to the presence of sterically hindered t-butyl groups, ttbCBP exhibits a high glass transition temperature (175 degrees C) and is morphologically stable. This host material also preserves the characteristics of wide band-gap of 3.2 eV and high triplet energy of 2.64 eV. In addition, ttbCBP has been shown to be effective hosts for green and red phosphorescent emitters in organic electrophosphorescent devices. (C) 2008 Elsevier B.V. All rights reserved.
引用
收藏
页码：943 / 947
页数：5
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