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Arezou Rashidi

Arezou Rashidi

Academic rank: Assistant Professor
ORCID: 0000-0001-5944-3226
Education: PhD.
ScopusId: 57193621558
Faculty: Science
Address: University of Mazandaran
Phone: 011-35305191

Research

Title
Tunable multispectral near-infrared absorption with a phase transition of VO2 nanoparticles hybridized with 1D photonic crystals
Type
JournalPaper
Keywords
absorber, Vanadium dioxide nanoparticles, One-dimensional photonic crystal mirrors, Phase transition, Thermo-optical effect
Year
2020
Journal NANOTECHNOLOGY
DOI
Researchers Arezou Rashidi ، Samad Roshan Entezar ، Ali Hatef

Abstract

We theoretically demonstrate a switchable multichannel near-infrared absorber in a composite structure based on vanadium dioxide nanoparticles embedded between two and one-dimensional photonic crystal mirrors. A switching of absorption behavior is induced through the reversible semiconductor-to-metal phase transition of vanadium dioxide nanoparticles via its temperature-dependent permittivity—thermo-optical effect. This behavior leads to a multi-wavelength reconfigurable optical response of the proposed structure from poorly absorbing to highly absorbing. For example, there is the possibility of enhancement of absorption from ∼0.14 to ∼0.75 at normal incidence of light by increasing the temperature beyond the critical value of ∼341 K when the vanadium dioxide nanoparticles transform from a semiconducting state into a metallic one. These properties make the considered structure applicable for use in multiband absorbers, light detectors, and optical switching devices.