北京大学肖立新教授11月3日下午学术报告

发布时间:2017-10-23访问量:489设置

报告人:肖立新 教授(北京大学)

报告题目:Highly Efficient Blue  OLED

报告时间:1103日下午15:00

报告地点:909-B

  

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


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