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活动名称：Unlocking a New Degree of Freedom: Spin Control in Unconventional
Semiconductors

时间：2026年4月13日 15:00-16:00

地点：物理楼W217

主讲人：吕海鹏

主办单位：物理与光电工程学院

主讲人简介：吕海鹏现任香港科技大学化学系助理教授。其课题组致力于无机化学的研究，解决可再生能源与可持续发展领域的关键科学难题。

吕海鹏于 2012 年获得南京大学化学学士学位，2017 年获美国南加州大学化学专业博士学位。博士毕业后，他进入美国国家可再生能源实验室开展博士后研究工作。

他曾荣获2019 年美国化学会物理化学分会青年研究者奖、2025 年香港科技大学理学院科学研究奖；连续入选 2023、2024 年度斯坦福大学与爱思唯尔联合发布的全球前 2% 顶尖科学家榜单；先后获评英国皇家化学会《Nanoscale》（2022 年）、《MaterialsChemistry Frontiers》（2024 年）新锐科学家。此外，他担任《Chiral Chemistry》期刊编委，同时受聘于《JACS Au》与《Materials Chemistry Frontiers》期刊青年顾问委员会。

报告摘要：In this talk, we will show our recent development of unconventionalsemiconductors including chiral metal-halide semiconductors and quantum dotstowards exotic functionalities that are otherwise impossible with molecular systems.In the first part of the talk, we will discuss the design of chiral metal-halidesemiconductors and the origin of chiroptical activity, followed with structuralmodulation of circular dichroism and circularly polarized luminescence. We will thenshow how chirality leads to spin control in halide semiconductors and theirapplications in chiral optoelectronics and spintronics. In the second part of the talk,we will show how chemical design of colloidal quantum dots can enableextreme-potential photocatalysis via spin-exchange Auger process. We will present aprecisely controlled quantum dot system that works as a strongphotoreductanttoactivate organic substrates with reduction potentials as low as -3.4 V versus thesaturated calomel electrode. Our findings demonstrate the unprecedented potential ofquantum-confined semiconductors in facilitating challenging organic transformationsthat were previously unattainable with molecular photocatalysts.