Optical characterization of phase-change materials for reconfigurable devices: GaS, Ga2S3 and MoOx: their plasmonics and beyond

Fernando Moreno; Yael Gutierrez Vela; Gonzalo Santos; Pablo García-Fernández; Javier Junquera; Mircea Modreanu; José M. Saiz; Dolores Ortiz; Francisco González; Maria Losurdo

doi:10.1117/12.2596836

12 September 2021 Optical characterization of phase-change materials for reconfigurable devices: GaS, Ga₂S₃ and MoOx: their plasmonics and beyond

Fernando Moreno, Yael Gutierrez Vela, Gonzalo Santos, Pablo García-Fernández, Javier Junquera, Mircea Modreanu, José M. Saiz, Dolores Ortiz, Francisco González, Maria Losurdo

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Proceedings Volume 11872, Advances in Optical Thin Films VII; 118720B (2021) https://doi.org/10.1117/12.2596836
Event: SPIE Optical Systems Design, 2021, Online Only

Abstract

From plasmonics with pure coinage metallic materials to the current advances in phase-change materials (PCM), research in nanophotonics has rapidly evolved, pushed by its wide gamut of applications. In this contribution, we will present three phase-change material examples: MoOx, Ga₂S₃ and GaS as promising candidates for reconfigurable plasmonic applications with fast and low-loss response. The first because modification of its oxygen stoichiometry (2< ×<3) induce a phase change in the VIS region, suitable for developing reflective pixels for display applications. The other two, because they show phase transitions due to changes in their lattice configurations, making them attractive for new broadband devices for switching and photodetection applications. They will be characterized and studied by resorting to exact DFT calculations. Also, their plasmonic response as well as their possible plasmonic coupling effects will be analyzed by considering the different envisaged applications.

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Fernando Moreno, Yael Gutierrez Vela, Gonzalo Santos, Pablo García-Fernández, Javier Junquera, Mircea Modreanu, José M. Saiz, Dolores Ortiz, Francisco González, and Maria Losurdo "Optical characterization of phase-change materials for reconfigurable devices: GaS, Ga₂S₃ and MoOx: their plasmonics and beyond", Proc. SPIE 11872, Advances in Optical Thin Films VII, 118720B (12 September 2021); https://doi.org/10.1117/12.2596836

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KEYWORDS

Plasmonics

Metals

Chalcogenides

Electromagnetism

Plasmons

Selenium

Switching

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