Light-absorption in nano-antennas: from hot carriers to thermo-optical effects

Giulia Tagliabue

doi:10.1117/12.2567410

22 August 2020 Light-absorption in nano-antennas: from hot carriers to thermo-optical effects

Giulia Tagliabue

Proceedings Volume 11462, Plasmonics: Design, Materials, Fabrication, Characterization, and Applications XVIII; 114620E (2020) https://doi.org/10.1117/12.2567410
Event: SPIE Nanoscience + Engineering, 2020, Online Only

Abstract

Recently, light absorption in optical nanoantennas has attracted growing interest. In particular, hot carrier generation in metallic (plasmonic) nanostructures and thermo-optical effects in dielectric Si and Ge nanoresonators offer novel opportunities for light-harnessing and energy conversion devices. Here, we report the construction, optoelectronic and photoelectrochemical characterization of plasmon-driven photodiodes and photocathodes based on a metal/p-type gallium nitride (p-GaN) heterostructure that operate within the visible regime via hot-hole injection. Next, we discuss how self-induced optical heating in Si and Ge nanoresonators affects their optical response and how it could be employed in optical devices and metasurfaces.

Conference Presentation

Citation Download Citation

Giulia Tagliabue "Light-absorption in nano-antennas: from hot carriers to thermo-optical effects", Proc. SPIE 11462, Plasmonics: Design, Materials, Fabrication, Characterization, and Applications XVIII, 114620E (22 August 2020); https://doi.org/10.1117/12.2567410

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