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

Giulia Tagliabue

doi:10.1117/12.2622032

24 May 2022 Light-absorption in nanoantennas: from hot carriers to thermo-optical effects

Giulia Tagliabue

Proceedings Volume PC12131, Nanophotonics IX; PC1213105 (2022) https://doi.org/10.1117/12.2622032
Event: SPIE Photonics Europe, 2022, Strasbourg, France

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 nanoantennas: from hot carriers to thermo-optical effects", Proc. SPIE PC12131, Nanophotonics IX, PC1213105 (24 May 2022); https://doi.org/10.1117/12.2622032

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