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Van der Waals two-color infrared photodetector

Light, science & applications, 2022-01, Vol.11 (1), p.6-6, Article 6 [Peer Reviewed Journal]

2022. The Author(s). ;The Author(s) 2022. This work is published under http://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License. ;The Author(s) 2022 ;ISSN: 2047-7538 ;ISSN: 2095-5545 ;EISSN: 2047-7538 ;DOI: 10.1038/s41377-021-00694-4 ;PMID: 34974520

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  • Title:
    Van der Waals two-color infrared photodetector
  • Author: Wu, Peisong ; Ye, Lei ; Tong, Lei ; Wang, Peng ; Wang, Yang ; Wang, Hailu ; Ge, Haonan ; Wang, Zhen ; Gu, Yue ; Zhang, Kun ; Yu, Yiye ; Peng, Meng ; Wang, Fang ; Huang, Min ; Zhou, Peng ; Hu, Weida
  • Subjects: Color ; Cooling systems ; Electric fields ; Radiation
  • Is Part Of: Light, science & applications, 2022-01, Vol.11 (1), p.6-6, Article 6
  • Description: With the increasing demand for multispectral information acquisition, infrared multispectral imaging technology that is inexpensive and can be miniaturized and integrated into other devices has received extensive attention. However, the widespread usage of such photodetectors is still limited by the high cost of epitaxial semiconductors and complex cryogenic cooling systems. Here, we demonstrate a noncooled two-color infrared photodetector that can provide temporal-spatial coexisting spectral blackbody detection at both near-infrared and mid-infrared wavelengths. This photodetector consists of vertically stacked back-to-back diode structures. The two-color signals can be effectively separated to achieve ultralow crosstalk of ~0.05% by controlling the built-in electric field depending on the intermediate layer, which acts as an electron-collecting layer and hole-blocking barrier. The impressive performance of the two-color photodetector is verified by the specific detectivity (D*) of 6.4 × 10  cm Hz  W at 3.5 μm and room temperature, as well as the promising NIR/MWIR two-color infrared imaging and absolute temperature detection.
  • Publisher: England: Springer Nature B.V
  • Language: English
  • Identifier: ISSN: 2047-7538
    ISSN: 2095-5545
    EISSN: 2047-7538
    DOI: 10.1038/s41377-021-00694-4
    PMID: 34974520
  • Source: Open Access: Nature Open Access
    AUTh Library subscriptions: ProQuest Central
    PubMed Central
    DOAJ Directory of Open Access Journals
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