Harvesting the Electromagnetic Energy Confined Close to a Hot Body

Author:

Ben-Abdallah Philippe1,Biehs Svend-Age2

Affiliation:

1. Laboratoire Charles Fabry, UMR 8501, Institut d’Optique, CNRS, Université Paris-Sud 11 , 2, Avenue Augustin Fresnel , 91127 Palaiseau Cedex , France

2. Institut für Physik, Carl von Ossietzky Universität , D-26111 Oldenburg , Germany

Abstract

Abstract In the close vicinity of a hot body, at distances smaller than the thermal wavelength, a high electromagnetic energy density exists due to the presence of evanescent fields radiated by the partial charges in thermal motion around its surface. This energy density can surpass the energy density in vacuum by several orders of magnitude. By approaching a photovoltaic (PV) cell with a band gap in the infrared frequency range, this nonradiative energy can be transferred to it by photon tunnelling and surface mode coupling. Here we review the basic ideas and recent progress in near-field energy harvesting.

Publisher

Walter de Gruyter GmbH

Subject

Physical and Theoretical Chemistry,General Physics and Astronomy,Mathematical Physics

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