Highly Efficient Blue Thermally Activated Delayed Fluorescence Emitters Based on Multi-Donor Modified Oxygen-Bridged Boron Acceptor
作者:Xin-Yue Meng、Zi-Qi Feng、You-Jun Yu、Liang-Sheng Liao、Zuo-Quan Jiang
DOI:10.3390/molecules27134048
日期:——
organic light-emitting diodes (OLEDs). In addition, the TADF emitter based on oxygen-bridged boron (BO) fragment can maintain blue emission with high color purity. Herein, we constructed two blue TADF emitters, 3TBO and 5TBO, for OLEDs application. Both emitters consist of three donors linked at the oxygen-bridged boron acceptor. OLED devices based on 3TBO and 5TBO exhibited both high excellent device efficiency
使用热激活延迟荧光 (TADF) 发射器是实现有机发光二极管 (OLED) 超过 25% 的外部量子效率 (EQE) 的最有希望的方法之一。此外,基于氧桥接硼(BO)碎片的TADF发射器可以保持高色纯度的蓝色发射。在这里,我们为 OLED 应用构建了两个蓝色 TADF 发射器,3TBO 和 5TBO。两种发射器均由三个连接在氧桥接硼受体上的供体组成。基于 3TBO 和 5TBO 的 OLED 器件表现出优异的器件效率和高色纯度,具有最大的 EQE;半高全宽 (FWHM);和 CIE 坐标分别为 17.3%, 47 nm, (0.120, 0.294) 和 26.2%, 57 nm, (0.125, 0.275)。