Imperial College London
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ProfessorJohannesLischner

Faculty of Engineering, Department of Materials

Professor of Theory and Simulation of Materials
 
 
 
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Contact

 

+44 (0)20 7594 9949j.lischner

 
 
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Location

 

342Bessemer BuildingSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Roman:2021:10.1021/acs.jpcc.0c07617,
author = {Roman, Castellanos L and Hess, O and Lischner, J},
doi = {10.1021/acs.jpcc.0c07617},
journal = {The Journal of Physical Chemistry C: Energy Conversion and Storage, Optical and Electronic Devices, Interfaces, Nanomaterials, and Hard Matter},
pages = {3081--3087},
title = {Dielectric engineering of hot carrier generation by quantized plasmons in embedded silver nanoparticles},
url = {http://dx.doi.org/10.1021/acs.jpcc.0c07617},
volume = {125},
year = {2021}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - Understanding and controlling properties of plasmon-induced hot carriers is a key step toward next-generation photovoltaic and photocatalytic devices. Here, we uncover a route to engineering hot-carrier generation rates of silver nanoparticles by designed embedding in dielectric host materials. Extending our recently established quantum-mechanical approach to describe the decay of quantized plasmons into hot carriers we capture both external screening by the nanoparticle environment and internal screening by silver d-electrons through an effective electron–electron interaction. We find that hot-carrier generation can be maximized by engineering the dielectric host material such that the energy of the localized surface plasmon coincides with the highest value of the nanoparticle joint density of states. This allows us to uncover a path to control the energy of the carriers and the amount produced, for example, a large number of relatively low-energy carriers are obtained by embedding in strongly screening environments.
AU  - Roman,Castellanos L
AU  - Hess,O
AU  - Lischner,J
DO  - 10.1021/acs.jpcc.0c07617
EP  - 3087
PY  - 2021///
SN  - 1932-7447
SP  - 3081
TI  - Dielectric engineering of hot carrier generation by quantized plasmons in embedded silver nanoparticles
T2  - The Journal of Physical Chemistry C: Energy Conversion and Storage, Optical and Electronic Devices, Interfaces, Nanomaterials, and Hard Matter
UR  - http://dx.doi.org/10.1021/acs.jpcc.0c07617
UR  - http://hdl.handle.net/10044/1/87027
VL  - 125
ER  -
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