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Reversible and non-volatile metal-to-insulator chemical transition in molybdenum oxide films

Abstract: Significant effort is being dedicated to developing alternative materials whose optical properties can be controllably and reversibly modified. Here, we experimentally demonstrate the reversible non-volatile molybdenum oxides MoO3-to-MoO2 transition associated to a change from a metallic to a dielectric behavior through cycles of thermal annealing in air and hydrogen (H2). A full cycle is demonstrated by characterizing structurally and optically the transition using Raman spectroscopy and spectroscopic ellipsometry. The potential applicability of the metal-to-insulator transition in MoOx is benchmarked through comparison with a canonical Mott insulator VO2 in a reconfigurable reflective configuration as well as in cladded waveguide schemes.

 Autoría: Gutiérrez Y., Santos G., Palumbo F., Modreanu M., Moreno F., Losurdo M.,

 Fuente: Optical Materials Express, 2022, 12(10), 3957-3969

Editorial: Optica Publishing Group

 Fecha de publicación: 13/09/2022

Nº de páginas: 13

Tipo de publicación: Artículo de Revista

 DOI: 10.1364/OME.465578

ISSN: 2159-3930

Proyecto europeo: info:eu-repo/grantAgreement/EC/H2020/ 899598/eu/Active Optical Phase-Change Plasmonic Transdimensional Systems Enabling Femtojoule and Femtosecond Extreme Broadband Adaptive Reconfigurable Devices/PHEMTRONICS/

Url de la publicación: https://doi.org/10.1364/OME.465578

Autores/as

GUTIÉRREZ, YAEL

GONZALO SANTOS PERODIA

PALUMBO, FABIO

MODREANU, MIRCEA

LOSURDO, MARIA