Synthesis and their device performance of solution processable host materials based on carbazole derivatives

被引：4
作者：
Moon, Byoung-Joon
Yook, Kyoung Soo
Lee, Jun Yeob
Hwang, Seok-Ho [1 ]
机构：
[1] Dankook Univ, Dept Polymer Sci & Engn, Yongin 448701, Gyeonggi, South Korea
来源：
SYNTHETIC METALS | 2012年 / 162卷 / 21-22期
关键词：
bis-Carbazolyl methane; Phosphine oxide; Phosphorescent OLEDs; Solution process; Host material; Triplet energy; BLUE ORGANIC ELECTROPHOSPHORESCENCE; HIGH-EFFICIENCY; BIPOLAR HOST; PHOSPHINE-OXIDE; TRIPLET-ENERGY; GREEN; HYBRID;
D O I：
10.1016/j.synthmet.2012.09.001
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
New carbazole based soluble high triplet-energy host materials, 9-(4-(bis(9-ethyl-9H-carbazol-3-yl)methyl)phenyl)-9H-carbazole and (9-(4-(bis(9-ethyl-9H-carbazol-3-yl)methyl)phenyl)-9Hcarbazole-3,6-diyl)bis(diphenylphosphine oxide), were synthesized and device performances of solution processed blue PHOLEDs were investigated. These host materials showed a high triplet energy (similar to 2.94 eV), excellent film formation ability and thermal stability. The maximum external quantum efficiency of blue PHOLEDs reached as high as 12.1% with a blue color coordinate of (0.14, 0.19). (C) 2012 Elsevier B.V. All rights reserved.
引用
收藏
页码：1828 / 1833
页数：6
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