Xu Ting, Liang Xiao, Xie Guohua
Shenzhen Key Laboratory of Polymer Science and Technology, College of Materials Science and Engineering, Shenzhen University, Shenzhen, China.
Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen, China.
Front Chem. 2021 May 20;9:691172. doi: 10.3389/fchem.2021.691172. eCollection 2021.
There is a need to satisfy the high color purity requirement of display technology with a simply fabricated process. Herein, solution-processed blue thermally activated delayed fluorescence organic light-emitting diodes (OLEDs) with a narrow spectrum with a full width at half maximum (FWHM) of 32 nm and y color coordinate below 0.2 are demonstrated by employing a molecule containing boron and nitrogen atoms (TBN-TPA) as the guest emitter in the emissive layer. The opposite resonance positions of B-N atoms of TBN-TPA endows a multi-resonance effect, leading to high color purity.
需要通过简单的制造工艺来满足显示技术对高色纯度的要求。在此，通过在发光层中使用含硼和氮原子的分子（TBN-TPA）作为客体发射体，展示了溶液处理的蓝色热激活延迟荧光有机发光二极管（OLED），其具有窄光谱，半高宽（FWHM）为32nm，y色坐标低于0.2。TBN-TPA的B-N原子的相反共振位置赋予了多共振效应，从而实现了高色纯度。
