Photogating Effect of Atomically Thin Graphene/MoS<sub>2</sub>/MoTe<sub>2</sub> van der Waals Heterostructures
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 sign...
| Published in: | Micromachines |
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| Main Authors: | , |
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2023-01-01
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| Subjects: | |
| Online Access: | https://www.mdpi.com/2072-666X/14/1/140 |
| _version_ | 1850130703101984768 |
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| author | Do-Hyun Park Hyo Chan Lee |
| author_facet | Do-Hyun Park Hyo Chan Lee |
| author_sort | Do-Hyun Park |
| collection | DOAJ |
| container_title | Micromachines |
| description | 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-MoS<sub>2</sub>/monolayer-MoTe<sub>2</sub> van der Waals heterostructure. By stacking MoS<sub>2</sub>/MoTe<sub>2</sub> 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). |
| format | Article |
| id | doaj-art-e53dd34963ef4c788cd3fcc423c26e87 |
| institution | Directory of Open Access Journals |
| issn | 2072-666X |
| language | English |
| publishDate | 2023-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| spelling | doaj-art-e53dd34963ef4c788cd3fcc423c26e872025-08-19T23:52:52ZengMDPI AGMicromachines2072-666X2023-01-0114114010.3390/mi14010140Photogating Effect of Atomically Thin Graphene/MoS<sub>2</sub>/MoTe<sub>2</sub> van der Waals HeterostructuresDo-Hyun Park0Hyo Chan Lee1Division of Quantum Phase and Devices, Konkuk University, Seoul 05029, Republic of KoreaChemical Engineering, Myongji University, Yongin 17058, Republic of KoreaThe 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-MoS<sub>2</sub>/monolayer-MoTe<sub>2</sub> van der Waals heterostructure. By stacking MoS<sub>2</sub>/MoTe<sub>2</sub> 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).https://www.mdpi.com/2072-666X/14/1/1402D materialsphotodetectorsvan der Waals heterostructure |
| spellingShingle | Do-Hyun Park Hyo Chan Lee Photogating Effect of Atomically Thin Graphene/MoS<sub>2</sub>/MoTe<sub>2</sub> van der Waals Heterostructures 2D materials photodetectors van der Waals heterostructure |
| title | Photogating Effect of Atomically Thin Graphene/MoS<sub>2</sub>/MoTe<sub>2</sub> van der Waals Heterostructures |
| title_full | Photogating Effect of Atomically Thin Graphene/MoS<sub>2</sub>/MoTe<sub>2</sub> van der Waals Heterostructures |
| title_fullStr | Photogating Effect of Atomically Thin Graphene/MoS<sub>2</sub>/MoTe<sub>2</sub> van der Waals Heterostructures |
| title_full_unstemmed | Photogating Effect of Atomically Thin Graphene/MoS<sub>2</sub>/MoTe<sub>2</sub> van der Waals Heterostructures |
| title_short | Photogating Effect of Atomically Thin Graphene/MoS<sub>2</sub>/MoTe<sub>2</sub> van der Waals Heterostructures |
| title_sort | photogating effect of atomically thin graphene mos sub 2 sub mote sub 2 sub van der waals heterostructures |
| topic | 2D materials photodetectors van der Waals heterostructure |
| url | https://www.mdpi.com/2072-666X/14/1/140 |
| work_keys_str_mv | AT dohyunpark photogatingeffectofatomicallythingraphenemossub2submotesub2subvanderwaalsheterostructures AT hyochanlee photogatingeffectofatomicallythingraphenemossub2submotesub2subvanderwaalsheterostructures |