標題: A morphologically stable host material for efficient phosphorescent green and red organic light emitting devices
作者: Ho, Meng-Huan
Balaganesan, Banumathy
Chu, Ta-Ya
Chen, Teng-Ming
Chen, Chin H.
電子物理學系
應用化學系
友訊交大聯合研發中心
Department of Electrophysics
Department of Applied Chemistry
D Link NCTU Joint Res Ctr
關鍵字: Organic electroluminescent devices;Phosphorescence;Host material;Carbazole
公開日期: 28-Nov-2008
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.
URI: http://dx.doi.org/10.1016/j.tsf.2008.07.005
http://hdl.handle.net/11536/8127
ISSN: 0040-6090
DOI: 10.1016/j.tsf.2008.07.005
期刊: THIN SOLID FILMS
Volume: 517
Issue: 2
起始頁: 943
結束頁: 947
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