High-performance hybrid white organic light-emitting diodes with bipolar host material and thermally activated delayed fluorescent emitter

被引：11
作者：
Wang, Jinjiang [1 ,2 ]
Li, You [2 ]
Chen, Liezun [2 ]
Deng, Yanhong [2 ]
Peng, Yuqi [2 ]
Lu, Feiping [3 ]
Zhu, Weihua [1 ]
机构：
[1] Univ South China, Sch Elect Engn, Hunan Prov Key Lab Ultrafast Micro Nano Technol &, 28 Changsheng West Rd, Hengyang 421001, Peoples R China
[2] Hengyang Normal Univ, Coll Phys & Elect Engn, 16 Henghua Rd, Hengyang 421002, Peoples R China
[3] Tianshui Normal Univ, Dept Phys, Tianshui 741000, Peoples R China
来源：
OPTICAL MATERIALS | 2020年 / 100卷
基金：
中国国家自然科学基金;
关键词：
Hybrid white organic light-emitting diodes (WOLEDs); Thermally activated delayed fluorescent (TADF); Energy transfer; Bipolar host material; High performance; UNIVERSAL HOST; EFFICIENT; BLUE; PHOSPHORESCENT; GREEN; COLOR; ELECTROPHOSPHORESCENCE;
D O I：
10.1016/j.optmat.2020.109673
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
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.
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页数：8
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