Imperial College London
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ProfessorEmilianoCortes

Faculty of Engineering, Department of Materials

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e.cortes

 
 
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Location

 

Blackett LaboratorySouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Jin:2023:10.1021/acsphotonics.3c00715,
author = {Jin, H and Herran, M and Cortés, E and Lischner, J},
doi = {10.1021/acsphotonics.3c00715},
journal = {ACS Photonics},
pages = {3629--3636},
title = {Theory of hot-carrier generation in bimetallic plasmonic catalysts},
url = {http://dx.doi.org/10.1021/acsphotonics.3c00715},
volume = {10},
year = {2023}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - Bimetallic nanoreactors in which a plasmonic metal is used to funnel solar energy toward a catalytic metal have recently been studied experimentally, but a detailed theoretical understanding of these systems is lacking. Here, we present theoretical results of hot-carrier generation rates of different Au-Pd nanoarchitectures. In particular, we study spherical core-shell nanoparticles with a Au core and a Pd shell as well as antenna-reactor systems consisting of a large Au nanoparticle that acts as an antenna and a smaller Pd satellite nanoparticle separated by a gap. In addition, we investigate an antenna-reactor system in which the satellite is a core-shell nanoparticle. Hot-carrier generation rates are obtained from an atomistic quantum-mechanical modeling technique which combines a solution of Maxwell's equation with a tight-binding description of the nanoparticle electronic structure. We find that antenna-reactor systems exhibit significantly higher hot-carrier generation rates in the catalytic material than the core-shell system as a result of strong electric field enhancements associated with the gap between the antenna and the satellite. For these systems, we also study the dependence of the hot-carrier generation rate on the size of the gap, the radius of the antenna nanoparticle, and the direction of light polarization. Overall, we find a strong correlation between the calculated hot-carrier generation rates and the experimentally measured chemical activity for the different Au-Pd photocatalysts. Our insights pave the way toward a microscopic understanding of hot-carrier generation in heterogeneous nanostructures for photocatalysis and other energy-conversion applications.
AU  - Jin,H
AU  - Herran,M
AU  - Cortés,E
AU  - Lischner,J
DO  - 10.1021/acsphotonics.3c00715
EP  - 3636
PY  - 2023///
SN  - 2330-4022
SP  - 3629
TI  - Theory of hot-carrier generation in bimetallic plasmonic catalysts
T2  - ACS Photonics
UR  - http://dx.doi.org/10.1021/acsphotonics.3c00715
UR  - https://www.ncbi.nlm.nih.gov/pubmed/37869558
UR  - https://pubs.acs.org/doi/10.1021/acsphotonics.3c00715
UR  - http://hdl.handle.net/10044/1/107763
VL  - 10
ER  -
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