Abstract Bipolar host material and thermally activated delayed fluorescent (TADF) emitter were used in hybrid white organic light-emitting diodes (OLEDs) with the aim to achieve high performance. First of all, the single color OLEDs was optimized by changing the thickness of hole transporting layer, electron transporting layer and the doping concentration of emission material. Then, white organic light-emitting diodes (WOLEDs) were fabricated on the basis of the former single color OLEDs by modifying the doping concentration of TADF emitter. Finally, an optimized white device shows the best results of 43.67 cd/A, 45.73 lm/W and 18.52% for current efficiency, power efficiency and external quantum efficiency, respectively. This research may supply a theoretical basis for the development of WOLEDs.

中文翻译：

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具有双极主体材料和热激活延迟荧光发射体的高性能混合白色有机发光二极管

摘要 双极主体材料和热激活延迟荧光 (TADF) 发射器被用于混合白色有机发光二极管 (OLED)，旨在实现高性能。首先，通过改变空穴传输层、电子传输层的厚度和发射材料的掺杂浓度来优化单色OLED。然后，在以前的单色OLED的基础上，通过改变TADF发射体的掺杂浓度，制备了白色有机发光二极管（WOLED）。最后，优化的白色器件的电流效率、功率效率和外量子效率分别为 43.67 cd/A、45.73 lm/W 和 18.52%。该研究可为WOLED的发展提供理论依据。