Article hBN‐Encapsulated Graphene Coupled to a Plasmonic Metasurface via 1D Electrodes for Photodetection Applications

Christian Frydendahl ; Sita Rama Krishna Chaitanya Indukuri ; Taget Raghavendran Devidas ; Zhengli Han ; Noa Mazurski ; Kenji Watanabe SAMURAI ORCID (National Institute for Materials Science) ; Takashi Taniguchi SAMURAI ORCID (National Institute for Materials Science) ; Hadar Steinberg ; Uriel Levy

Advanced Photonics Research - 2024 - Frydendahl - hBN‐Encapsulated Graphene Coupled to a Plasmonic Metasurface via 1D.pdf
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Christian Frydendahl, Sita Rama Krishna Chaitanya Indukuri, Taget Raghavendran Devidas, Zhengli Han, Noa Mazurski, Kenji Watanabe, Takashi Taniguchi, Hadar Steinberg, Uriel Levy. hBN‐Encapsulated Graphene Coupled to a Plasmonic Metasurface via 1D Electrodes for Photodetection Applications. Advanced Photonics Research. 2024, 5 (4), 2300192. https://doi.org/10.1002/adpr.202300192

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(abstract)

It is shown here how encapsulated graphene devices can be laterally coupled to plasmonic metasurfaces via 1D edge contacts, preserving the high mobility of encapsulated graphene while enhancing optical coupling. The device is used for photodetection applications where high responsivities in the range of 100 A W−1 for most of the visible spectrum are reported. The device exhibits a photogating effect which is attributed to defect states in the encapsulating hBN layers. The results highlight a new configuration to couple graphene with plasmonic structures and points to a new type of device based on defect states and graphene's excellent transport properties to achieve photodetectors with ultrahigh responsivities.

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Keyword: Graphene, Plasmonic Metasurfaces, High-Responsivity Photodetectors

Date published: 2024-02-02

Publisher: Wiley

Journal:

  • Advanced Photonics Research (ISSN: 26999293) vol. 5 issue. 4 2300192

Funding:

  • Carlsbergfondet

Manuscript type: Publisher's version (Version of record)

MDR DOI:

First published URL: https://doi.org/10.1002/adpr.202300192

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Updated at: 2025-08-01 16:30:28 +0900

Published on MDR: 2025-08-01 16:18:21 +0900

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