文献类型：期刊文献

英文题名：Pure hydrocarbon host materials based on spirofluorene with excellent performances for green phosphorescent light-emitting devices

作者：Tian, Guojian[1,2];Jiang, Yongxin[3];Wu, Panpan[1,2];Huang, Jinhai[1,2];Zou, Qi[4];Wang, Qiaochun[1,2];Mu, Haichuan[3];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]Shanghai Univ Elect Power, Shanghai Key Lab Mat Protect & Adv Mat Elect Powe, Shanghai 200090, Peoples R China

年份：2016

卷号：40

期号：11

起止页码：9500

外文期刊名：NEW JOURNAL OF CHEMISTRY

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000387621500062)】；

基金：Q. Z. acknowledges financial support by the National Natural Science Foundation of China (No. 21406137) and the Shanghai Sailing Program (No. 14YF1410900).

语种：英文

摘要：Four pure hydrocarbon molecules based on spirofluorene were synthesized and their optoelectronic properties were investigated. These four compounds ( 1-4) exhibited excellent optoelectronic properties with good thermal stabilities, favorable optical energy bandgaps and triplet energies, compatible HOMO-LUMO energy levels and so on. Green phosphorescent organic light emitting devices ( PHOLEDs) in which these four compounds served as host materials have been fabricated, and compound 1 demonstrated the optimal electroluminescence ( EL) performance with a maximum current efficiency, maximum power efficiency and external quantum efficiency ( EQE) of 31.5 cd A(-1), 19.8 lm W-1 and 9.0%, respectively, which make it a promising candidate as a host material for PHOLEDs.