Novel host materials based on phenanthroimidazole derivatives for highly efficient green phosphorescent OLEDs

被引：27
|
作者：
Zhang, Xingye [1 ,3 ]
Lin, Jie [2 ]
Ouyang, Xinhua [1 ]
Liu, Ying [1 ]
Liu, Xingyuan [2 ]
Ge, Ziyi [1 ]
机构：
[1] Chinese Acad Sci, NIMTE, Ningbo 315201, Peoples R China
[2] Chinese Acad Sci, Changchun Inst Opt Fine Mech & Phys, Lab Excited State Proc, Changchun 130033, Peoples R China
[3] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
来源：
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY | 2013年 / 268卷
基金：
中国国家自然科学基金;
关键词：
Host materials; Phosphorescent organic light-emitting diodes (PhOLEDs); External quantum efficiency (EQE); Triplet energy level; LIGHT-EMITTING DEVICES; BIPOLAR HOST; TRIPLET ENERGY; ORGANIC ELECTROPHOSPHORESCENCE; BLUE; DIODES; TRIPHENYLAMINE; CARBAZOLE; FLUORENE; SINGLET;
D O I：
10.1016/j.jphotochem.2013.06.012
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Two novel host materials, 2-(4,4 ''-di(9H-carbazol-9-yl)-[1,1':3',1 ''-terphenyl]-5'-yl)-1-(4-(trifluoromethyl)phenyl)-1H-phenanhro[9,10-d]imidazole (DCzBPI) and N4,N4,N4 '',N4 ''-tetraphenyl-5'-(1-(4(trifluoromethyl)phenyl))-1H-phenanthro-[9,10-d] (DTPABPI), were designed and synthesized. The electroluminescence (EL) characteristics by using them as host materials were investigated. Results were found both of them showed good performance, especially for DCzBPI. The maximal external quantum efficiency is up to 21.2% and the brightness is up to 63,610 cd/m(2) with current efficiency of 53.8 cd A(-1). (C) 2013 Elsevier B.V. All rights reserved.
引用
收藏
页码：37 / 43
页数：7
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