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

Autor:	Mengying Bian, Gang Yu, Huibo Wei, Chunhui Huang, Xuzheng Fu, Zifeng Zhao, Zhiwei Liu, Chenjian Lin, Zuqiang Bian
Rok vydání:	2021
Předmět:	Lanthanide Photoluminescence Quenching (fluorescence) Materials science chemistry OLED chemistry.chemical_element Quantum yield Quantum efficiency Terbium General Chemistry Electroluminescence Photochemistry
Zdroj:	Science China Chemistry. 64:1504-1509
ISSN:	1869-1870 1674-7291
DOI:	10.1007/s11426-021-1036-0
Popis:	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 eV) 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.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::5ed574362846cb7ae9611659b0fcfe8c https://doi.org/10.1007/s11426-021-1036-0 Zobrazit plný text záznamu Full text from SpringerLink