Tri‐Spiral Donor for High Efficiency and Versatile Blue Thermally Activated Delayed Fluorescence Materials
作者:Wei Li、Binbin Li、Xinyi Cai、Lin Gan、Zhida Xu、Wenqi Li、Kunkun Liu、Dongcheng Chen、Shi‐Jian Su
DOI:10.1002/anie.201904272
日期:2019.8.12
as high as a 90 % horizontal orientation dipole ratio and external quantumefficiencies (EQEs) of up to 33.3 % in doped and 20.0 % in nondoped sky‐blue TADF‐OLEDs. More fascinatingly, a high‐efficiency purely organic white OLED with an outstanding EQE of up to 22.8 % was also achieved by employing TspiroS‐TRZ as a blue emitter and an assistant host. This compound is the first blue TADFemitter that