卢嘉锡讲座
报告题目：Light-triggered Regionally Controlled n-Doping of Organic Materials
报告时间：2026-01-14 14:30
报告人： 裴坚 教授
北京大学
报告地点：卢嘉锡楼202报告厅
转播地点：翔安校区能源材料大楼3号楼视频会议室，漳州校区生化主楼307教室
报告摘要：
Doping is a primary method to modulate the electrical properties of semiconductors, enabling the success of fabricating various homo/heterojunctions and complex devices. For organic semiconductors (OSCs), the electrical performance has been extensively improved by the development of doping methods and dopants. However, the spatial resolution remains low and requires specific fabrication processes, limiting the construction of complex electronic devices. Here, we present a facile light-triggered doping strategy and develop a series of inactive photoactivable dopants (iPADs) for regionally controlled n-doping of OSCs. By converting iPADs into active dopants through ultraviolet (UV) exposure, controllable doping in various n-type OSCs can be realized, achieving a high electrical conductivity over 30 S cm−1. Moreover, regionally controlled doping is demonstrated in OSCs with a resolution down to less than 1 μm due to the limitation of the UV exposure techniques. Transistors, logic circuits, thermoelectrics, and electronic circuits demonstrate improved performance using the fabricated devices with such light-triggered doping. Overall, our dopants have achieved tunable doping levels in OSCs with high spatial resolution, which is also expected to be highly suited for integrated circuits in both roll-to-roll and laboratory-scale environments.
报告人简介：
裴坚，北京大学化学与分子工程学院教授。教育部“长江学者”特聘教授，国家自然科学基金委“杰出青年基金”获得者，国家教学名师。
裴坚长期致力于共轭高分子的研究，承担科技部、基金委等多项国家重大科研项目，在高分子材料的合成、凝聚态行为、器件化与产业化方面开展了深入系统的研究。迄今发表SCI收录论文300余篇，他人引用25000余次，H-因子86，授权发明专利12项。曾获教育部自然科学奖一等奖、北京市科学技术二等奖、第五届中国化学会-巴斯夫公司青年知识创新奖、第三届中国化学会-赢创化学创新奖，并被选为英国皇家化学会会士。
裴坚是国家级教学名师、北京市教学名师，多年讲授北京大学基础核心课程《有机化学》、《中级有机化学》等课程，《中级有机化学》获评国家级一流课程。参与编写的《基础有机化学（第三、四版）》等教材获全国优秀教材一等奖，主编的《中级有机化学》获北京高等教育精品教材。两次获得国家级教学成果二等奖、曾获首都劳动奖章、多次获评北京市教学成果奖、北京大学教学成果特等奖和一等奖等等；多次获评北京市优秀教师、北京大学十佳教师等称号。
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