Bolometric photodetection using plasmon-assisted resistivity change in vanadium dioxide

Scientific Reports
Hironobu TakeyaWakana Kubo

Abstract

Vanadium oxide is a key sensing material for bolometric photodetection, thanks to its strong temperature dependence of resistivity close to room temperature. Here we demonstrate the photodetection of a stoichiometric vanadium dioxide thin film integrated with silver nanorods. The nanorods convert light into heat, consequently suppressing the resistivity of vanadium dioxide via localised surface plasmon resonance. Incorporation of this thermo-plasmonic effect into bolometric photodetection allows for wavelength and polarisation sensitivity. This work opens the path to a broad family of photodetection functionalities for vanadium dioxide-based microbolometers.

References

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Citations

Nov 25, 2018·Optics Express·Edgar BrionesGregorio Alvarez-Alvarez

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Methods Mentioned

BETA
electron beam
surface plasmon resonance
electron beam lithography

Software Mentioned

COMSOL Multiphysics )

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