学术讲座
报告题目：Unlocking a New Degree of Freedom: Spin Control in Unconventional Semiconductors
报告时间：2025-07-11 14:30
报告人： 吕海鹏 副教授
香港科技大学
报告地点：翔安校区能源材料大楼3号楼会议室2
转播地点：思明校区化报厅103教室，漳州校区生化主楼307教室
报告摘要：
In this talk, we will show our recent development of unconventional semiconductors including chiral metal-halide semiconductors and quantum dots towards exotic functionalities that are otherwise impossible with molecular systems. In the first part of the talk, we will discuss the design of chiral metal-halide semiconductors and the origin of chiroptical activity, followed with structural modulation of circular dichroism and circularly polarized luminescence. We will then show how chirality leads to spin control in halide semiconductors and their applications in chiral optoelectronics and spintronics. In the second part of the talk, we will show how chemical design of colloidal quantum dots can enable extreme-potential photocatalysis via spin-exchange Auger process. We will present a precisely controlled quantum dot system that works as a strong photoreductant to activate organic substrates with reduction potentials as low as -3.4 V versus the saturated calomel electrode. Our findings demonstrate the unprecedented potential of quantum-confined semiconductors in facilitating challenging organic transformations that were previously unattainable with molecular photocatalysts.
报告人简介：
Haipeng Lu is an Assistant Professor at the Department of Chemistry of the Hong Kong University of Science and Technology (HKUST). His group works on developing inorganic chemistry approaches to address challenges related to renewable energy and sustainability. He received his B.Sc. in chemistry from Nanjing University in 2012, and completed his Ph.D. in 2017 in chemistry at the University of Southern California. He then moved to the National Renewable Energy Laboratory (NREL) as a postdoctoral fellow. He is the recipient of 2019 ACS Division of Physical Chemistry Young Investigator Award and 2025 HKUST School of Science Research Award. He was listed among the World’s Top 2% Scientists by Stanford University, Elsevier BV, 2023. He was selected as Royal Society of Chemistry Nanoscale (2022) and Materials Chemistry Frontiers (2024) Emerging Investigator. He serves as Editorial Board Member of Chiral Chemistry, and joined Early Career Advisory Board of JACS Au and Materials Chemistry Frontiers.
欢迎老师同学们积极参加!
化学化工学院
表界面化学全国重点实验室
