报告人：肖立新 教授（北京大学）

报告题目：Highly Efficient Blue OLED

报告时间：11月03日下午15:00

报告地点：909楼-B厅

摘要

Based on our work on deep blue OLED, very recently, we have synthesized a deep blue emitter TPEA that combines the advantages of TTF-HLCT to enhance the h_exciton for high EL efficiencies and the merits of AIE to ensure low roll-off of device efficiency. The anthracene groups are twisted from the central TPE moiety, which effectively prevents bathochromic shift of emission as shown in its crystallographic structure. In addition, a D-A structure was built by using methoxy and cyano to improve the charge balance in the devices. In addition, the material possesses high thermal stability with a T_g of 155 °C. The non-doped device achieved the high performance with a V_on of 2.6 V at a luminance of 1 cd m⁻², a h_{PE, max} of 11.1 lm W⁻¹, a h_{CE, max} of 9.9 cd A⁻¹, and a low h_CE roll-off. The doped device based on TPEA was fabricated to acquire deep blue emission with CIE coordinates of (0.15, 0.09), showing a h_{ext, max} up to 8.0% and the highest h_{PE, max} of 7.3 lm W⁻¹ among all the TTF and HLCT deep-blue emitters. Inspired by these preliminary results, we believe that the combination of the merits of TTF-HLCT and AIE would be a promising molecular design principle for exploring highly efficient deep blue emitters.

简介

肖立新：北京大学物理学院教授，博士生导师。 2000年获日本东京大学博士学位。中国光学学会、美国材料学会、SPIE学会会员、及英国皇家化学学会会士。长期从事光电功能材料及器件方面的研究，如有机发光材料及其器件，光伏材料及其器件物理等。主持过多次国家自然科学基金，承担973项目子课题。已发表论文120余篇及申请专利共30余件，SCI他引2000余次，编著《钙钛矿太阳能电池》，译著《有机电致发光-从材料到器件》，参与编著《锂离子电池》。2015年度教育部自然科学一等奖（第一完成人，高效有机蓝光材料及其介观结构发光器件研究）。

联系人：廖良生 教授

责任编辑：杨娟