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 liga...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.展开更多
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)。
文摘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.
