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Acta Optica Sinica, Volume. 42, Issue 22, 2204001(2022)

Characteristics of ZnO Nanowire Arrays/PVK Heterojunction Ultraviolet Photodetector

Zhaolin Yuan1,2、*, Yujie Hu1, Lü Jihui1, Wenqian He1, Jianfeng He1,2, Nengchang Xu2, and Shengyu You1,2
Author Affiliations
  • 1School of Software, East China University of Technology, Nanchang 330013, Jiangxi , China
  • 2School of Information Engineering, East China University of Technology, Nanchang 330013, Jiangxi , China
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    AbstractGet PDF(in Chinese)
    Figures&Tables (7)
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    References (29)
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    Figures & Tables(7)
    Diagram of ITO/ZNWAs/PVK/Au UV photodetector

    Fig. 1. Diagram of ITO/ZNWAs/PVK/Au UV photodetector

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    FESEM and XRD patterns of ZNWAs. (a) Low-magnification FESEM image; (b) high-magnification FESEM image; (c) cross-sectional FESEM image; (d) XRD pattern

    Fig. 2. FESEM and XRD patterns of ZNWAs. (a) Low-magnification FESEM image; (b) high-magnification FESEM image; (c) cross-sectional FESEM image; (d) XRD pattern

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    UV-visible absorption spectra of ZNWAs, PVK, and ZNWAs/PVK films

    Fig. 3. UV-visible absorption spectra of ZNWAs, PVK, and ZNWAs/PVK films

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    Spectral response of ITO/ZNWAs/PVK/Au UV photodetector at 2 V

    Fig. 4. Spectral response of ITO/ZNWAs/PVK/Au UV photodetector at 2 V

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    I-V characteristics of ITO/ZNWAs/PVK/Au UV photodetector in dark and under 365 nm UV irradiation (irradiance: 71.2 μW/cm2)

    Fig. 5. I-V characteristics of ITO/ZNWAs/PVK/Au UV photodetector in dark and under 365 nm UV irradiation (irradiance: 71.2 μW/cm2)

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    Time-dependent photocurrent response of ITO/ZNWAs/PVK/Au UV photodetector under 365 nm UV irradiation (irradiance: 71.2 μW/cm2) at 1.75 V. (a) I-t characteristic of device by turning on and off UV light periodically; (b) typical normalized response

    Fig. 6. Time-dependent photocurrent response of ITO/ZNWAs/PVK/Au UV photodetector under 365 nm UV irradiation (irradiance: 71.2 μW/cm2) at 1.75 V. (a) I-t characteristic of device by turning on and off UV light periodically; (b) typical normalized response

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    • Table 1. Comparison of main performance parameters for several p-n heterojunction UV photodetectors

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      Table 1. Comparison of main performance parameters for several p-n heterojunction UV photodetectors

      Device type

      Responsivity

      Rλ /（A·W-1）

      Detectivity

      D* /（cm·Hz1/2·W-1）

      		EQEReference
      n-ZnO thin films/p-Si0.075006.44×1090.25Ref. ［25］
      n-ZNWAs/p-NiO0.00140--Ref. ［7］
      n-ZnO/p-GaN0.001511.14×1010-Ref. ［9］
      n-ZNWAs/p-PVK37.720001.29×1012128This work
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    Zhaolin Yuan, Yujie Hu, Lü Jihui, Wenqian He, Jianfeng He, Nengchang Xu, Shengyu You. Characteristics of ZnO Nanowire Arrays/PVK Heterojunction Ultraviolet Photodetector[J]. Acta Optica Sinica, 2022, 42(22): 2204001

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    Paper Information

    Category: Detectors

    Received: Apr. 14, 2022

    Accepted: May. 23, 2022

    Published Online: Nov. 7, 2022

    The Author Email: Yuan Zhaolin (yzlyx98@sina.com)

    DOI:10.3788/AOS202242.2204001

    Topics

    laser devices and laser physics
    Lasers and Laser Optics
    Laser physics
    laser manufacturing
    Instrumentation, Measurement and Metrology