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; Takashi Taniguchi; Hadar Steinberg; Uriel Levy

doi:10.1002/adpr.202300192

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, Takashi Taniguchi, Hadar Steinberg, Uriel Levy

Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaper › Journal article › Research › peer-review

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.

Original language	English
Article number	2300192
Journal	Advanced Photonics Research
Volume	5
Issue	4
ISSN	2699-9293
DOIs	https://doi.org/10.1002/adpr.202300192
Publication status	Published - 2024
Externally published	Yes

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@article{27bd145ccefc479d874bd91ec505cbec,

title = "hBN-Encapsulated Graphene Coupled to a Plasmonic Metasurface via 1D Electrodes for Photodetection Applications",

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.",

keywords = "grapehene, hBN defects, hot carriers, photodetections, plasmonics",

author = "Christian Frydendahl and Indukuri, \{Sita Rama Krishna Chaitanya\} and Devidas, \{Taget Raghavendran\} and Zhengli Han and Noa Mazurski and Kenji Watanabe and Takashi Taniguchi and Hadar Steinberg and Uriel Levy",

year = "2024",

doi = "10.1002/adpr.202300192",

language = "English",

volume = "5",

journal = "Advanced Photonics Research",

issn = "2699-9293",

publisher = "Wiley-VCH",

number = "4",

}

hBN-Encapsulated Graphene Coupled to a Plasmonic Metasurface via 1D Electrodes for Photodetection Applications. / Frydendahl, Christian; Indukuri, Sita Rama Krishna Chaitanya; Devidas, Taget Raghavendran et al.
In: Advanced Photonics Research, Vol. 5, No. 4, 2300192, 2024.

Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaper › Journal article › Research › peer-review

TY - JOUR

T1 - hBN-Encapsulated Graphene Coupled to a Plasmonic Metasurface via 1D Electrodes for Photodetection Applications

AU - Frydendahl, Christian

AU - Indukuri, Sita Rama Krishna Chaitanya

AU - Devidas, Taget Raghavendran

AU - Han, Zhengli

AU - Mazurski, Noa

AU - Watanabe, Kenji

AU - Taniguchi, Takashi

AU - Steinberg, Hadar

AU - Levy, Uriel

PY - 2024

Y1 - 2024

N2 - 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.

AB - 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.

KW - grapehene

KW - hBN defects

KW - hot carriers

KW - photodetections

KW - plasmonics

U2 - 10.1002/adpr.202300192

DO - 10.1002/adpr.202300192

M3 - Journal article

SN - 2699-9293

VL - 5

JO - Advanced Photonics Research

JF - Advanced Photonics Research

IS - 4

M1 - 2300192

ER -

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

Abstract

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