Nanoantenna-coupled MIM nanodiodes for efficient vis/nir energy conversion

Richard M. Osgood III; Brian R. Kimball; Joel Carlson

doi:10.1117/12.733168

13 September 2007 Nanoantenna-coupled MIM nanodiodes for efficient vis/nir energy conversion

Richard M. Osgood III, Brian R. Kimball, Joel Carlson

Proceedings Volume 6652, Optical Modeling and Measurements for Solar Energy Systems; 665203 (2007) https://doi.org/10.1117/12.733168
Event: Solar Energy + Applications, 2007, San Diego, California, United States

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.

Citation Download Citation

Richard M. Osgood III, Brian R. Kimball, and Joel Carlson "Nanoantenna-coupled MIM nanodiodes for efficient vis/nir energy conversion", Proc. SPIE 6652, Optical Modeling and Measurements for Solar Energy Systems, 665203 (13 September 2007); https://doi.org/10.1117/12.733168

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