Electrically Reconfigurable Plasmonic Metasurfaces Based on Phase-Change Materials Sb<sub>2</sub>S<sub>3</sub>

Phase-change materials (PCMs) are widely used in active optical metasurfaces due to their large refractive index contrast and fast and stable phase-change properties. In this paper, an electrically reconfigurable plasmonic metasurface based on the PCM Sb<sub>2</sub>S<sub>3</sub> is proposed to achieve nonvolatile, reversible, and fast optical modulation in the near-infrared range. The designed metasurface can redshift the surface plasmon resonance peak from 1320 to 1480 nm through the phase transition of Sb<sub>2</sub>S<sub>3</sub> from amorphous to crystalline states. In addition, we further experimentally design an electrically reconfigurable platform. In a 30 μm × 30 μm region, the phase state of Sb<sub>2</sub>S<sub>3</sub> with a thickness of 60 nm is successfully and reversibly changed, which contributes to the dynamic modulation of gold gratings. This work has great application potential in reconfigurable optical filters and communication systems and adaptive optical imaging and sensing.

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Publication Details

Journal
Nano Letters
Published
2025-04-23
DOI
https://doi.org/10.1021/acs.nanolett.5c00929
Citations
13
Primary Topic
Phase-change materials and chalcogenides
Type
article
Field-Weighted Citation Impact
6.73
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Electrically Reconfigurable Plasmonic Metasurfaces Based on Phase-Change Materials Sb2S3

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Nano Letters
Phase-change materials and chalcogenides
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Electrically Reconfigurable Plasmonic Metasurfaces Based on Phase-Change Materials Sb2S3

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article en
13 citations

Abstract

Phase-change materials (PCMs) are widely used in active optical metasurfaces due to their large refractive index contrast and fast and stable phase-change properties. In this paper, an electrically reconfigurable plasmonic metasurface based on the PCM Sb<sub>2</sub>S<sub>3</sub> is proposed to achieve nonvolatile, reversible, and fast optical modulation in the near-infrared range. The designed metasurface can redshift the surface plasmon resonance peak from 1320 to 1480 nm through the phase transition of Sb<sub>2</sub>S<sub>3</sub> from amorphous to crystalline states. In addition, we further experimentally design an electrically reconfigurable platform. In a 30 μm × 30 μm region, the phase state of Sb<sub>2</sub>S<sub>3</sub> with a thickness of 60 nm is successfully and reversibly changed, which contributes to the dynamic modulation of gold gratings. This work has great application potential in reconfigurable optical filters and communication systems and adaptive optical imaging and sensing.

Nano LettersVol. 25(18)
Jilin University (CN), Chinese Academy of Sciences (CN), Henan University of Technology (CN), Physical Sciences (United States) (US), FZU ‒ Institute of Physics of the Academy of Sciences of the Czech Republic (CZ), Division of Materials Science and Engineering (AU), Jilin Medical University (CN), University of Chinese Academy of Sciences (CN)
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Phase-change materials and chalcogenides
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