文献类型：期刊文献

英文题名：Bipolar carbazole/quinoxaline-based host materials for efficient red PhOLEDs

作者：Hu, Mingming[1,2];Xu, Qihao[1,2];Jiang, Yongxin[3];Mu, Haichuan[3];Gao, Lei[4];Hu, Peijun[4];Huang, Jinhai[5];Su, Jianhua[1,2]

机构：[1]East China Univ Sci & Technol, Key Lab Adv Mat, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Inst Fine Chem, Shanghai 200237, Peoples R China;[3]East China Univ Sci & Technol, Sch Sci, Dept Phys, 130 Meilong Rd, Shanghai 200237, Peoples R China;[4]Queens Univ Belfast, Sch Chem & Chem Engn, Belfast BT9 5AG, Antrim, North Ireland;[5]Shanghai Taoe Chem Technol Co Ltd, Shanghai, Peoples R China

年份：2018

卷号：150

起止页码：185

外文期刊名：DYES AND PIGMENTS

收录：;EI(收录号：20175004538196);WOS:【SCI-EXPANDED(收录号:WOS:000427332200025)】；

语种：英文

外文关键词：Carbazole-quinoxaline; Red PhOLEDs; Bipolar hosts

摘要：Three bipolar hosts, 9-(4-(2,3-diphenylquinoxalin-6-yl)phenyl)-9H-carbazole (p-PQPC), 9-(3-(2,3-diphenylquinoxalin-6-yl)phenyl)-9H-carbazole (m-PQPC) and 9-(2-(2,3-diphenylquinoxalin-6-yl)phenyl)-9H-carbazole (o-PQPC) were designed, synthesized and characterized for red phosphorescence organic light emitting devices (PhOLEDs). These three compounds exhibited excellent physical properties with high thermal stabilities, reasonable HOMO-LUMO energy levels and balanced charge transport. All of them were applied to fabricate red PhOLEDs as host materials, and the p-PQPC based device demonstrated outstanding electroluminescence performance with the maximum current efficiency, power efficiency and external quantum efficiency of 21.9 cd/A, 15.4 lm/W and 12.2%, respectively, which suggesting that p-PQPC is a promising host for red PhOLEDs. (C) 2017 Elsevier Ltd. All rights reserved.