发光学报2022，Vol.43Issue(5)：763-772,10.DOI:10.37188/CJL.20220049
基于混合主体结构的溶液法制备的高效蓝色磷光OLED
High-efficiency Blue Phosphorescent OLEDs Based on Mixed-host Structure by Solution-processed Method
摘要
Abstract
Blue phosphorescent organic light-emitting diodes ( PHOLEDs ) which utilized TcTa and CzSi as the mixed-host were fabricated to improve the efficiency by solution-processed method. Additionally, three electron trans-port materials Tm3PyP26PyB, TmPyPB and TPBi were employed to further enhance the efficiency of devices. The efficiency was improved by optimizing the ratio of host materials and the selection of electron transport material. Finally, the optimal device with the doping ratio TcTa:CzSi of 6:1 and 70 nm TPBi layer exhibited the maximum brightness (Bmax), current efficiency(CEmax), power efficiency(PEmax) and external quantum efficiency(EQEmax) of 6662 cd· m-2, 39.40 cd·A -1, 23. 33 lm·W -1 and 19. 7％, respectively. Moreover, outstanding current efficiency and external quantum efficiency as high as 33. 43 cd·A -1 and 16. 7％, respectively, were obtained, even at the practi-cal brightness of 1000 cd·m -2 .关键词
有机发光二极管/高效/溶液法/混合主体结构/蓝光Key words
organic light-emitting diodes/high efficiency/solution-processed/mixed-host structure/blue emission分类
信息技术与安全科学引用本文复制引用
王哲,武瑞霞,冯洋,刘华,周亮..基于混合主体结构的溶液法制备的高效蓝色磷光OLED[J].发光学报,2022,43(5):763-772,10.基金项目
国家自然科学基金(62174160) （62174160）
中国科学院科研设备开发项目(YJKYYQ20200005)资助Supported by National Natural Science Foundation of China(62174160) （YJKYYQ20200005）
Research Equipment Development Project of Chinese Academy of Sciences(YJKYYQ20200005) （YJKYYQ20200005）
