文献类型：期刊文献

英文题名：Highly efficient triazine/carbazole-based host material for green phosphorescent organic light-emitting diodes with low efficiency roll-off

作者：Hu, Mingming[1,2];Liu, Yang[1,2];Chen, Yi[1,2];Song, Wenxuan[1,2];Gao, Lei[4];Mu, Haichuan[3];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, Sch Chem & Chem Engn, Belfast, Antrim, North Ireland;[5]Shanghai Taoe Chem Technol Co Ltd, Shanghai, Peoples R China

年份：2017

卷号：7

期号：12

起止页码：7287

外文期刊名：RSC ADVANCES

收录：;EI(收录号：20170503295234);WOS:【SCI-EXPANDED(收录号:WOS:000393756000058)】；

语种：英文

外文关键词：Phosphorescence - Sound insulating materials - Electroluminescence - Light

摘要：Two novel host materials, 3-(dibenzo[b,d]furan-4-yl)-9-(4,6-diphenyl-1,3,5-triazin-2-yl)-9H-carbazole (BFTC) and 3-(dibenzo[b, d] thiophen-4-yl)-9-(4,6-diphenyl-1,3,5-triazin-2-yl)-9H-carbazole (BTTC) were designed and synthesized. These two compounds exhibited excellent physical properties with high thermal stabilities and reasonable HOMO-LUMO energy levels. Both of them were applied to fabricate green phosphorescent organic light emitting devices (PhOLEDs) as host materials, and the BTTC based device demonstrated outstanding electroluminescence performance with a maximum current efficiency, maximum power efficiency and external quantum efficiency of 69.3 cd A(-1), 54.2 lm W-1 and 21.9%, respectively, suggesting that BTTC is a promising host for green PhOLEDs.