首页|基于蓝光TADF材料的敏化白光OLED特性

基于蓝光TADF材料的敏化白光OLED特性

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  • 国家科技期刊平台
  • NETL
  • NSTL
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白光有机发光二极管(WOLEDs)由于面光源、可柔性、轻薄、自发光等优势而广泛应用于显示和照明领域.目前,高效溶液处理的混合白光有机发光二极管很少被报道.本文选择蓝色热致延迟荧光材料DMAC-DPS作为传统橙色磷光材料PO-01-TB的敏化主体,制备了热活化敏化的杂化单发光层有机发光二极管白光器件,分析了器件能量传递机制.通过主客体掺杂浓度调控,实现了外部量子效率最高为 8.00%、电流效率为22.32 cd/A、对应CIE坐标(0.405,0.497)及色温为4 059 K的暖白光OLED器件,增加空穴阻挡层DPEPO有效地提高了器件的光谱稳定性,实现了更小的ΔCIE(0.017,0.016).
Characterization of Sensitized White OLEDs Based on Blue TADF Materials
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.

white organic light-emitting diodesthermally activated delayed fluorescence materialssolution treat-mentenergy transfer

徐子杰、王文军、李淑红、刘云龙

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聊城大学 物理科学与信息工程学院,山东 聊城 252059

聊城大学 山东省光通信科学与技术重点实验室,山东 聊城 252059

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

国家自然科学基金山东省自然科学基金山东省自然科学基金聊城大学项目聊城大学项目

61775089ZR2020KB18ZR2022MF240318011904318051650

2024

10.37188/CJL.20240050

发光学报
中国物理学会发光分会,中国科学院长春光学精密机械与物理研究所

发光学报

CSTPCD北大核心
影响因子：1.301
ISSN：1000-7032
年,卷(期)：2024.45(6)
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