【时间】2026年9月16日（星期三）  10:00

【地点】量子院526报告厅

【主持】李铁夫  院长助理、研究员

【题目】Harnessing quantum excitations for energy transformation

【摘要】Extraordinary energy and environmental demands call for fundamental research. In the spectrum of methods that could be part of solutions, light harvesting and transformation using photovoltaics, solar cells, and photocatalysis, take the central positions. Photovoltaics (PV) is a method of generating electrical power by converting solar radiation into electricity using semiconductors and nanostructures that exhibit the photovoltaic effect. Photocatalysis can convert solar energy directly into fuels. In all these fields, nanoscale structures are today playing the key roles. It highlights the genuine quantum nature of the electronic spectra and the quantum transitions during absorption and transformation of energy from light to electricity, and to fuels. Today, I will report some of latest progresses in the study of light absorption and conversion using surface plasmons of metal nanoparticles, and self-trapped exciton in double perovskites. In particular, I will focus on the mechanism and quantum dynamics of excitations, spatial charge separation and vibrational activation. Potential applications of these findings for solar energy harvesting and conversions are also discussed.

eferences:

1.Shengxiang Wu, Yu Chen, and Shiwu Gao, Plasmonic photocatalysis with nonthermalized hot carriers, Phys. Rev. Lett. 129, 086801 (2022). 

2.Yu Chen, Shengxiang Wu, and Shiwu Gao, Unified description of thermal and nonthermal carriers in plasmonic photocatalysis, J. Phys. Chem. C 129, 12804-12813 (2025).

3.Hanwen Jin, Chengcheng Xiao, Matias Herran, Emiliano Cortés, Shiwu Gao, and Johannes Lischner, Hot carrier generation in bimetallic Janus nanoparticles, ACS Nano 20, 4291-4300 (2026). 

4.Yu Chen, Hanwen Jin, Fei Gao, Johannes Lischner, and Shiwu Gao, Quantum hot carrier spectra in plasmonic catalysis, (2026). https://arxiv.org/html/2609.06949v1.

【报告人简介】高世武，北京计算科学研究中心讲座教授（2014-）。博士生导师，国家特聘专家。前瑞典哥德堡大学教授。中科院物理研究所博士(1990)，曾任职瑞典Chalmers大学应用物理系助理教授（1992-1997)，哥德堡大学物理系副教授（1997-2005)，教授（2006-2014）。 研究领域：材料理论和计算物理。主要从事电子结构、电子激发态、表面动力学、量子耗散系统的理论发展和计算模拟，及其并行计算方法的实现。著有100余篇学术论文和Elsevier百科全书章节。