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Photogating Effect of Atomically Thin Graphene/MoS₂/MoTe₂ van der Waals Heterostructures.

ABSTRACT: The development of short-wave infrared photodetectors based on various two-dimensional (2D) materials has recently attracted attention because of the ability of these devices to operate at room temperature. Although van der Waals heterostructures of 2D materials with type-II band alignment have significant potential for use in short-wave infrared photodetectors, there is a need to develop photodetectors with high photoresponsivity. In this study, we investigated the photogating of graphene using a monolayer-MoS₂/monolayer-MoTe₂ van der Waals heterostructure. By stacking MoS₂/MoTe₂ on graphene, we fabricated a broadband photodetector that exhibited a high photoresponsivity (>100 mA/W) and a low dark current (60 nA) over a wide wavelength range (488-1550 nm).

SUBMITTER: Park DH

PROVIDER: S-EPMC9866681 | biostudies-literature | 2023 Jan

REPOSITORIES: biostudies-literature

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Photogating Effect of Atomically Thin Graphene/MoS2/MoTe2 van der Waals Heterostructures.

Park Do-Hyun DH Lee Hyo Chan HC

Micromachines 20230104 1

The development of short-wave infrared photodetectors based on various two-dimensional (2D) materials has recently attracted attention because of the ability of these devices to operate at room temperature. Although van der Waals heterostructures of 2D materials with type-II band alignment have significant potential for use in short-wave infrared photodetectors, there is a need to develop photodetectors with high photoresponsivity. In this study, we investigated the photogating of graphene using ...[more]

PMID: 36677201

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