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The plasmoelectric effect: optically induced electrochemical potentials in resonant metallic structures

Sheldon, Matthew T. and Atwater, Harry A. (2012) The plasmoelectric effect: optically induced electrochemical potentials in resonant metallic structures. California Institute of Technology , Pasadena, CA. (Submitted)

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We describe a strategy for conversion of optical power into DC electrical power using resonant absorption in plasmonic nanostructures. A thermodynamic analysis of the underlying mechanism motivates our description of the phenomenon, which we term the plasmoelectric effect. Power conversion results from the dependence of optically generated heat on shifts of the plasmon resonance frequency that occur with changes of electron density. We model an all-metal device constructed from 10 nm radius silver spheres and predict a characteristic conversion efficiency of 14.3% under 1 kW m-2 intensity, single-frequency radiation. We discuss strategies for enhanced efficiency, broadband power conversion, and further applications of this new class of optoelectronic device.

Item Type:Report or Paper (Discussion Paper)
Related URLs:
URLURL TypeDescription Paper
Sheldon, Matthew T.0000-0002-4940-7966
Atwater, Harry A.0000-0001-9435-0201
Additional Information:The authors gratefully acknowledge support from the Department of Energy, Office of Science under contract number DE-FG02-07ER46405. Helpful discussions with E. Kosten, V. Brar, D. Callahan, M. Deceglie, A. Leenheer, and J. Fakonas are gratefully acknowledged.
Funding AgencyGrant Number
Department of Energy (DOE)DE-FG02-07ER46405
Subject Keywords:Mesoscale and Nanoscale Physics (cond-mat.mes-hall); Optics (physics.optics)
Record Number:CaltechAUTHORS:20120213-080602952
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:29250
Deposited By: Tony Diaz
Deposited On:24 Apr 2012 21:53
Last Modified:25 Nov 2020 18:15

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