Imperial College London
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Professor Lesley F Cohen

Faculty of Natural Sciences, Department of Physics

Associate Provost (Equality, Diversity and Inclusion)
 
 
 
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Contact

 

+44 (0)20 7594 7598l.cohen Website CV

 
 
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Assistant

 

Mrs Carolyn Dale +44 (0)20 7594 7579

 
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Location

 

1111Blackett LaboratorySouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Shautsova:2018:10.1038/s41467-018-07508-z,
author = {Shautsova, V and Sidiropoulos, T and Xiao, X and Gusken, N and Black, N and Gilbertson, A and Maier, S and Cohen, L and Oulton, R},
doi = {10.1038/s41467-018-07508-z},
journal = {Nature Communications},
title = {Plasmon induced thermoelectric effect in graphene},
url = {http://dx.doi.org/10.1038/s41467-018-07508-z},
volume = {9},
year = {2018}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - Graphene has emerged as a promising material for optoelectronics due to its potential for ultrafast and broad-band photodetection. The photoresponse of graphene junctions is characterized by two competing photocurrent generation mechanisms: a conventional photovoltaic effect and a more dominant hot-carrier-assisted photothermoelectric (PTE) effect. The PTE effect is understood to rely on variations in the Seebeck coefficient through the graphene doping profile. A second PTE effect can occur across a homogeneous graphene channel in the presence of an electronic temperature gradient. Here, we study the latter effect facilitated by strongly localised plasmonic heating of graphene carriers in the presence of nanostructured electrical contacts resulting in electronic temperatures of the order of 2000 K. At certain conditions, the plasmon-induced PTE photocurrent contribution can be isolated. In this regime, the device effectively operates as a sensitive electronic thermometer and as such represents an enabling technology for development of hot carrier based plasmonic devices.
AU  - Shautsova,V
AU  - Sidiropoulos,T
AU  - Xiao,X
AU  - Gusken,N
AU  - Black,N
AU  - Gilbertson,A
AU  - Maier,S
AU  - Cohen,L
AU  - Oulton,R
DO  - 10.1038/s41467-018-07508-z
PY  - 2018///
SN  - 2041-1723
TI  - Plasmon induced thermoelectric effect in graphene
T2  - Nature Communications
UR  - http://dx.doi.org/10.1038/s41467-018-07508-z
UR  - http://hdl.handle.net/10044/1/64942
VL  - 9
ER  -
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