发光学报2022，Vol.43Issue(3)：359-370,12.DOI:10.37188/CJL.20210397
用于高效红色磷光有机发光二极管的双极性芴基咔唑基主体材料
Bipolar Fluorenylcarbazole-based Host Materials for Efficient Red Phosphorescent Organic Light-emitting Diodes
摘要
Abstract
Achieving high-efficiency red phosphorescent organic light-emitting diodes ( PhOLEDs ) is still a chal-lenge, which is largely related to the host material used in device fabrication. Two new bipolar hosts, 2-(9H-carba-zol-9-yl)-7,7-dimethyl-5-(4-phenylquinazolin-2-yl)-5,7-dihydroindeno[2,1-b]carbazole(FC-CZ-PQZ) and 2-(4-(9H-carbazol-9-yl) phenyl)-7,7-dimethyl-5-(4-phenylquinazolin-2-yl)-5,7-dihydroindeno [2,1-b] carbazole ( FC-BCz-PQZ) , were designed and synthesised as host materials to fabricate red PhOLEDs. The two compounds exhibited excellent physical properties with high thermal stabilities and balanced charge transport. FC-BCz-PQZ has a better bi-polar carrier transport compared to FC-CZ-PQZ. FC-BCz-PQZ-based device demonstrated good electroluminescence performance with the maximum current efficiency, power efficiency and external quantum efficiency of 13. 5 cd/A, 14. 2 lm/W and 14. 8％, respectively, suggesting its promising application as a host material for red PhOLEDs.关键词
芴基咔唑/喹唑啉/红光PhOLEDs/双极性主体Key words
fluorenylcarbazole/quinazoline/red PhOLEDs/bipolar hosts分类
数理科学引用本文复制引用
凌乾坤,董必正,陈志宽,王华,魏定纬,李祥智,赵波,李天保,陈飞..用于高效红色磷光有机发光二极管的双极性芴基咔唑基主体材料[J].发光学报,2022,43(3):359-370,12.基金项目
国家自然科学基金(62074109,21875106)资助项目 （62074109,21875106）
