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Proceedings Paper

Nanoantenna-coupled MIM nanodiodes for efficient vis/nir energy conversion
Author(s): Richard M. Osgood III; Brian R. Kimball; Joel Carlson
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Paper Abstract

Nanoantennas, coupled to rectifying nanodiodes ("rectennas"), could be used for converting broadband visible/near-infrared energy to direct current, and could serve as fast, high-Q infrared detectors at designed wavelengths. We study and model the efficiency of antennas coupled to metal-insulator-metal (MIM) and thermionic emission diodes, over a wide range of incident wavelengths. We find that tuning the antenna's reactance, so that the antenna acts as an inductor and resonantly cancels the diode capacitance, can enhance energy conversion efficiency by more than an order of magnitude above the broadband level, at the resonance frequency. We discuss maximizing the efficiency of a modern rectenna-based broadband energy conversion system, especially in the challenging visible regime, and recommend using nanodiodes with conduction via thermionic emission. We recommend further modeling of and experiments with nanoantennas, in order to calculate total efficiency of the nanorectenna's energy conversion.

Paper Details

Date Published: 13 September 2007
PDF: 11 pages
Proc. SPIE 6652, Optical Modeling and Measurements for Solar Energy Systems, 665203 (13 September 2007); doi: 10.1117/12.733168
Show Author Affiliations
Richard M. Osgood III, U.S. Army Soldier Systems Ctr. (United States)
Brian R. Kimball, U.S. Army Soldier Systems Ctr. (United States)
Joel Carlson, U.S. Army Soldier Systems Ctr. (United States)

Published in SPIE Proceedings Vol. 6652:
Optical Modeling and Measurements for Solar Energy Systems
Daryl R. Myers, Editor(s)

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