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Proceedings Paper

A new avenue for high efficiency solar cells: interaction of hot electrons with plasmons (Presentation Recording)
Author(s): Krzysztof Kempa; Michael J. Naughton
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Paper Abstract

Hot electrons rapidly dissipate their extra free energy, typically into heat. This is the origin of the Shockley-Queisser efficiency limit of the single junction solar cells. An even faster mechanism of electron-plasmon scattering is available in metals. We demonstrate by detailed simulations, that an ultra-thin solar cell with a composite metamaterial/plasmonic collector could yield efficiency exceeding the Shockley-Quasar limit. The composite collector has a double function: firstly, it is designed to participate in efficiently trapping light, and secondly, it is a plasmonic resonator tuned to absorb the energy of hot electrons, thus protecting them from phonon losses.

Paper Details

Date Published: 5 October 2015
PDF: 1 pages
Proc. SPIE 9546, Active Photonic Materials VII, 95461O (5 October 2015); doi: 10.1117/12.2189728
Show Author Affiliations
Krzysztof Kempa, Boston College (United States)
Michael J. Naughton, Boston College (United States)

Published in SPIE Proceedings Vol. 9546:
Active Photonic Materials VII
Ganapathi S. Subramania; Stavroula Foteinopoulou, Editor(s)

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