Efficient green OLEDs achieved by a terbium(Ⅲ)complex with photoluminescent quantum yield close to 100%  

作　　者：Zifeng Zhao Mengying Bian Chenjian Lin Xuzheng Fu Gang Yu Huibo Wei Zhiwei Liu Zuqiang Bian Chunhui Huang 

机构地区：[1]Beijing National Laboratory for Molecular Sciences(BNLMS),State Key Laboratory of Rare Earth Materials Chemistry and Applications,College of Chemistry and Molecular Engineering,Peking University,Beijing,100871,China [2]State Key Laboratory for Mesoscopic Physics,Department of Physics,Peking University,Beijing,100871,China [3]Jiangsu JITRI Molecular Engineering Institute Co.,Ltd.,Changshu,215500,China

出　　处：《Science China Chemistry》2021年第9期1504-1509,共6页中国科学（化学英文版）

基　　金：supported by the National Basic Research Program of China(2017YFA0205100);the Key Project of Science and Technology Plan of Beijing Education Commission(KZ201910028038);financial support from the China Postdoctoral Science Foundation(2018M641065,2021T140009)。

摘　　要：Electroluminescence of f-f transition lanthanide complex is a traditional topic for display over decades.Here we report highly efficient organic light-emitting diodes based on a new terbium(III)complex with novel ligand CPMIP(1-(4-cyanophenyl)-3-methyl-4-isobutyryl-pyrazoline-5-one).The high triplet energy level of CPMIP(3.0 e V)and inhibited quenching effects in the solid-state lead to a nearly 100%photoluminescent quantum efficiency of Tb(CPMIP)3.The best Tb(CPMIP)3 device exhibited maximum external quantum efficiency up to 19.7%,setting a new record of OLEDs based on f-f transition lanthanide complexes.

关 键 词：LUMINESCENCE TERBIUM lanthanide complex organic light-emitting diodes 

分 类 号：TN383.1[电子电信—物理电子学] O641.4[理学—物理化学]