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 hexciton 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 tg of 155 °c. the non-doped device achieved the high performance with a von of 2.6 v at a luminance of 1 cd m−2, a hpe, max of 11.1 lm w−1, a hce, max of 9.9 cd a−1, and a low hce 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 hext, max up to 8.0% and the highest hpe, 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