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      Permanent link:
      https://www.ias.ac.in/article/fulltext/boms/045/0084

    • Keywords

       

      Photodetector; heterojunction; chemical vapour deposition; copper oxide nanoparticle.

    • Abstract

       

      Photodetector (PD) was successfully fabricated based on p-CuO NPs/n-SnO$_2$ NWs/Si heterojunction. SnO$_2$ nanowires (SnO$_2$ NWs) on a silicon substrate were first synthesized via chemical vapour deposition (CVD) followed bythe deposition of copper oxide nanoparticles (CuO NPs) using the drop-casting technique. The films were characterized by X-ray diffraction and scanning electron microscope equipped with an energy dispersive X-ray spectrometer. Subsequently,two steps of PD fabrications were conducted for SnO$_2$ NWs/Si and CuO/SnO$_2$/Si films. The dark I–V characteristics of SnO$_2$/Si and CuO/SnO$_2$/Si heterojunction exhibit a rectification property. The PD response of SnO$_2$/Si has asharp cutoff at a wavelength around 390 nm, while the CuO/SnO$_2$/Si nanostructures displayed response at wavelengths in the red UV region (${\sim}$400 nm). The responsivity and quantum efficiency of SnO$_2$/Si and CuO/SnO$_2$/Si heterojunction are about 0.057–0.33 A/W and 17–94%, respectively. The results of p-n heterojunctions based on CuO NPs/SnO$_2$ NWs/Sirevealed an efficiency enhancement of the visible-blind SnO$_2$ photodiodes representing a feasible route for building UV optoelectronic devices based on cost-effective materials.

    • Author Affiliations

       

      ABULQADER D FAISAL ALI A ALJUBOURI1 WAFAA K KHALEF

      1. Department of Applied Sciences, University of Technology, Baghdad 10066, Iraq

    • Dates

       
      Published
      16 May 2022
      Manuscript received
      18 July 2021
      Accepted
      8 January 2022
      Final version published online
      16 May 2022

  • Bulletin of Materials Science | News

    • Dr Shanti Swarup Bhatnagar for Science and Technology

      Posted on October 12, 2020

      Prof. Subi Jacob George — Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bengaluru
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      Prof. Surajit Dhara — School of Physics, University of Hyderabad, Hyderabad
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    • Editorial Note on Continuous Article Publication

      Posted on July 25, 2019

      Click here for Editorial Note on CAP Mode

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