主讲人：Prof. Alberto Vomiero
时间：12月16日下午16:00
地点：丽湖校区启明楼C101报告厅
报告人简介：
Alberto Vomiero holds the chair of Experimental Physics at the Luleå University of Technology, Sweden, and the chair of Industrial Engineering at Ca’ Foscari University of Venice, Italy. He also holds the UNESCO chair Technologies and Materials for Green and Energy Applications (Aid4GEA). He was awarded his PhD in Electronic Engineering from the University of Trento in 2003 and his Degree in Physics from the University of Padova in 1999. His main research interests are in composite nanomaterials (wide bandgap semiconductors, semiconducting nanocrystals, and hybrid systems) for gas sensors, excitonic solar cells, water purification and solar fuels. He has published more than 300 peer-reviewed papers in international Journals and six book chapters. He is a fellow of the European Academy of Sciences, former Marie Curie international outgoing fellow of the European Commission, fellow of the American Ceramic Society, fellow of the PIFI initiative (Chinese Academy of Sciences), of the Institute of Physics (UK), of the Royal Society of Chemistry (UK), of the Institute of Nanotechnology (UK), of the Institute of Engineering & Technology, of the Institute of Materials, Minerals and Mining, Vebleo fellow, former chair of the Italian section of the American Nano Society, and alumnus of the Global Young Academy. He is associate editor of Nano Energy (Elsevier) and editorial board member of Small (Wiley), of Scientific Reports (Nature Publishing Group), and other journals related to materials for energy & environment.
讲座摘要：
Composite nanostructures can be efficiently applied for Sunlight conversion and, in general, for energy harvesting and generation of solar fuels. In most of the applied systems, like excitonic solar cells, (photo)-electrochemical cells for solar fuel production, and evaporation systems for water desalination, nanomaterials can play a critical role in boosting conversion efficiency and energy use by ameliorating the processes of light management, charge photogeneration, exciton dissociation, and charge transport. A crucial role in such processes is played by the structure and quality of the interface, which needs to be properly assembled to obtain the desired functionality. Specifically, the structure of the interface determines the electronic configuration of the conduction and valence band in semiconducting composites, altering the electronic and optoelectronic properties of composite nanostructures and quantum systems. In addition, conformal interfaces inhibiting the presence of pin-holes in sub-nanometer thin films of multilayered devices are very challenging to obtain, but are critical to avoid undesired electrical short circuits. Several strategies can be pursued to modify the interface of composite systems, aiming to maximize energy harvesting and storage, including broadening light absorbance to reduce solar light losses, fastening exciton dissociation and charge injection from the photoactive medium to the charge transporting materials, reducing charge recombination during charge transport and collection at the electrodes, creation of continuous nanometer thick conformal layers to overcome issues related to the presence of pin-holes. In this lecture, a few examples of the application of nanocomposites will be discussed, including thin film solar cells [1], quantum dot and carbon dot fluorophores for high-efficiency luminescent solar concentrators [2,3], selective solar absorbers for solar water desalination [4] and composite sulfides for hydrogen generation [5,6]. Emphasis will be given to the role of interface engineering in improving the efficiency of energy conversion in different systems, spanning from electric power generation from Sunlight to chemical fuel production.
Keywords: Engineered interfaces; composite nanosystems; solar energy harvesting; solar fuels.
Reference
[1] Kumar, P.; et al. Nano Energy, 2025, 134, 110539.
[2] Zhao, H.; et al. Energy & Environmental Science, 2021, 14, 396.
[3] Li, J.; et al. Nano Energy, 2025, 134, 110514.
[4] Taranova, A.; et al. Nature Communications, 2023, 14, 7280.
[5] Ibrahim, K.B.; et al. Small Methods, 2023, 7, 2300348.
[6] Shifa, T.A.; et al. Chemical Engineering Journal 2023, 453, 139781.
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