发光学报2024，Vol.45Issue(6)：1005-1014,10.DOI:10.37188/CJL.20240050
基于蓝光TADF材料的敏化白光OLED特性
Characterization of Sensitized White OLEDs Based on Blue TADF Materials
摘要
Abstract
White organic light-emitting diodes(WOLEDs)are widely used in display and lighting applications due to the advantages of surface light source,flexibility,thinness,and self-emission.Highly efficient solution-processed hybrid white light-emitting organic light-emitting diodes(WOLEDs)are seldom reported.In this paper,we chose the blue thermally delayed fluorescent material DMAC-DPS to be the sensitised host of the conventional orange phosphorescent material PO-01-TB,and prepared thermally activated sensitised hybrid single light-emitting layer organic light-emitting diode white-light devices,and analysed the mechanism of the energy transfer of the devices.The highest external quantum efficiency of 8.00%,current efficiency of 22.32 cd/A,corresponding to the CIE coordinates(0.405,0.497)and a warm white OLED device with a color temperature of 4 059 K were achieved through the modulation of the doping concentration of the host and the guest.The addition of a hole-blocking layer,DPEPO,effectively improves the spectral stability of the device and achieves a smaller ΔCIE(0.017,0.016).This study inspires the development of efficient WOLEDs in the future.关键词
白光有机发光二极管/热致延迟荧光材料/溶液处理/能量转移Key words
white organic light-emitting diodes/thermally activated delayed fluorescence materials/solution treat-ment/energy transfer分类
信息技术与安全科学引用本文复制引用
徐子杰,王文军,李淑红,刘云龙..基于蓝光TADF材料的敏化白光OLED特性[J].发光学报,2024,45(6):1005-1014,10.基金项目
国家自然科学基金(61775089) （61775089）
山东省自然科学基金(ZR2020KB18,ZR2022MF240) （ZR2020KB18,ZR2022MF240）
聊城大学项目(318011904,318051650)Supported by National Natural Science Foundation of China(61775089) （318011904,318051650）
Natural Science Foundation of Shandong Province(ZR2020KB18,ZR2022MF240) （ZR2020KB18,ZR2022MF240）
Project of Liaocheng University(318011904,318051650) （318011904,318051650）
