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{Lischner:2022:10.1103/PRXEnergy.1.013006,
author = {Lischner, J and Jin, H and Ferreira, A and Kahk, J and Papaconstapoulos, D},
doi = {10.1103/PRXEnergy.1.013006},
journal = {Physical Review X},
pages = {1--9},
title = {Plasmon-induced hot carriers from interband and intraband transitions in large noble metal nanoparticles},
url = {http://dx.doi.org/10.1103/PRXEnergy.1.013006},
volume = {1},
year = {2022}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - Hot electrons generated from the decay of localized surface plasmons in metallic nanostructureshave the potential to transform photocatalysis, photodetection and other optoelectronic applications.However, the understanding of hot-carrier generation in realistic nanostructures, in particular therelative importance of interband and intraband transitions, remains incomplete. Here we reporttheoretical predictions of hot-carrier generation rates in spherical nanoparticles of the noble metalssilver, gold and copper with diameters up to 30 nanometers consisting of more than one millionatoms obtained from an atomistic linear-scaling approach. As the nanoparticle size increases therelative importance of interband transitions from d-bands to sp-bands relative to surface-enabled spband to sp-band transitions increases. We find that the hot-hole generation rate is characterized bya peak at the onset of the d-bands, while the position of the corresponding peak in the hot-electrondistribution can be controlled through the illumination frequency. In contrast, intraband transitionsgive rise to hot electrons, but relatively cold holes. Importantly, increasing the dielectric constantof the environment removes hot carriers generated from interband transitions, while increasing thenumber of hot carriers from intraband transitions. The insights resulting from our work enable thedesign of nanoparticles for specific hot-carrier applications through their material composition, sizeand dielectric environment.
AU  - Lischner,J
AU  - Jin,H
AU  - Ferreira,A
AU  - Kahk,J
AU  - Papaconstapoulos,D
DO  - 10.1103/PRXEnergy.1.013006
EP  - 9
PY  - 2022///
SN  - 2160-3308
SP  - 1
TI  - Plasmon-induced hot carriers from interband and intraband transitions in large noble metal nanoparticles
T2  - Physical Review X
UR  - http://dx.doi.org/10.1103/PRXEnergy.1.013006
UR  - https://journals.aps.org/prxenergy/abstract/10.1103/PRXEnergy.1.013006
UR  - http://hdl.handle.net/10044/1/96859
VL  - 1
ER  -
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