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Proceedings Paper

Photocathode performance improvement by plasmonic light trapping in nanostructured metal surfaces
Author(s): Aleksandr Polyakov; Kevin Thompson; Christoph Senft; Scott Dhuey; Bruce Harteneck; Xiaogan Liang; James P. Schuck; Stefano Cabrini; Weishi Wan; Howard A. Padmore
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Paper Abstract

We demonstrate 16 times increase in light absorption nano-structured metal compared to the flat surface by fabricating a subwavelength grating on gold surface. This light-trapping phenomenon can be used in many areas from solar energy conversion to photovoltaics. Here, we describe application to field enhancement in photocathodes where we show theoretically a performance increase of three orders of magnitude over conventional systems. We also describe the fabrication of these devices and present initial optical results.

Paper Details

Date Published: 7 September 2011
PDF: 8 pages
Proc. SPIE 8094, Nanophotonic Materials VIII, 809407 (7 September 2011); doi: 10.1117/12.894607
Show Author Affiliations
Aleksandr Polyakov, Lawrence Berkeley National Lab. (United States)
Univ. of California, Berkeley (United States)
Kevin Thompson, Lawrence Berkeley National Lab. (United States)
Univ. of California, Berkeley (United States)
Christoph Senft, Lawrence Berkeley National Lab. (United States)
Scott Dhuey, Lawrence Berkeley National Lab. (United States)
Bruce Harteneck, Lawrence Berkeley National Lab. (United States)
Xiaogan Liang, Lawrence Berkeley National Lab. (United States)
James P. Schuck, Lawrence Berkeley National Lab. (United States)
Stefano Cabrini, Lawrence Berkeley National Lab. (United States)
Weishi Wan, Lawrence Berkeley National Lab. (United States)
Howard A. Padmore, Lawrence Berkeley National Lab. (United States)


Published in SPIE Proceedings Vol. 8094:
Nanophotonic Materials VIII
Stefano Cabrini; Taleb Mokari, Editor(s)

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