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説明:

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.

権利情報:

• Creative Commons BY Attribution 4.0 International
  

キーワード: Graphene, Plasmonic Metasurfaces, High-Responsivity Photodetectors

刊行年月日: 2024-02-02

出版者: Wiley

掲載誌:

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

研究助成金:

• Carlsbergfondet

原稿種別: 出版者版 (Version of record)

MDR DOI:

公開URL: https://doi.org/10.1002/adpr.202300192

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更新時刻: 2025-08-01 16:30:28 +0900

MDRでの公開時刻: 2025-08-01 16:18:21 +0900