基于多供体修饰氧桥硼受体的高效蓝色热激活延迟荧光发射体
Highly Efficient Blue Thermally Activated Delayed Fluorescence Emitters Based on Multi-Donor Modified Oxygen-Bridged Boron Acceptor.
作者信息
Meng Xin-Yue, Feng Zi-Qi, Yu You-Jun, Liao Liang-Sheng, Jiang Zuo-Quan
机构信息
Institute of Functional Nano & Soft Materials, Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Joint International Research Laboratory of Carbon-Based Functional Materials and Devices, Soochow University, Suzhou 215123, China.
出版信息
Molecules. 2022 Jun 23;27(13):4048. doi: 10.3390/molecules27134048.
The employment of thermally activated delayed fluorescence (TADF) emitters is one of the most promising ways to realize the external quantum efficiency (EQE) of over 25% for 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 and high color purity with a maximum EQE; full-width at half-maximum (FWHM); and CIE coordinates of 17.3%, 47 nm, (0.120, 0.294), and 26.2%, 57 nm, (0.125, 0.275), respectively.
采用热激活延迟荧光（TADF）发光体是实现有机发光二极管（OLED）外部量子效率（EQE）超过25%的最有前景的方法之一。此外，基于氧桥联硼（BO）片段的TADF发光体能够保持高色纯度的蓝色发射。在此，我们构建了两种用于OLED应用的蓝色TADF发光体3TBO和5TBO。这两种发光体均由连接在氧桥联硼受体上的三个供体组成。基于3TBO和5TBO的OLED器件展现出了优异的器件效率和高色纯度，其最大EQE分别为17.3%和26.2%；半高宽（FWHM）分别为47 nm和57 nm；CIE坐标分别为(0.120, 0.294)和(0.125, 0.275)。
Zotero 插件