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<p>Green synthesis offers an environmentally sustainable and cost-effective approach for the fabrication of semiconductor nanostructures. Using copper nitrate as a precursor and arabic gum extract as a natural reducing and stabilizing agent, CuO/Cu<sub>2</sub>O nanoparticles were effectively produced via a green synthesis method. The structural, morphological, and optical characteristics of the produced nanomaterials were examined using a variety of characterization methods. A mixed-phase CuO/Cu<sub>2</sub>O crystalline structure with high crystallinity was established by X-ray diffraction (XRD) investigation. The production of copper oxide bonds was confirmed by Fourier transform infrared (FTIR) spectroscopy, which showed distinctive Cu-O vibrational bands in the range of 665–750&#xa0;cm<sup>−1</sup>. A plate-like shape with particle diameters roughly between 66 and 83 nm was revealed by scanning electron microscopy (SEM) research. Strong absorption in the ultraviolet and visible regions was found when optical characteristics were investigated using UV–Vis spectroscopy. The produced nanostructures were used to create a heterojunction photo detector based on Ag/p-CuO/n-Si. When exposed to light, the apparatus demonstrated a distinct photo response in the visible and near-infrared spectrum’s. The device’s capacity to detect low-intensity light was demonstrated by its specific detectivity, which reached about <InlineEquation ID="IEq6"> <EquationSource Format="TEX">\(1.28 \times 10^{11}\)</EquationSource> </InlineEquation> Jones. The mixed-phase structure and better charge transfer at the CuO/Cu<sub>2</sub>O interface are responsible for the improved performance. The findings show that green-synthesized copper oxide nanostructures have the potential to be used in low-cost optoelectronic sensing applications.</p>

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Green Synthesized CuO/Cu2O Nanostructures for High-Performance Ag/p-CuO/n-Si Heterojunction Photodetector

  • 期刊论文

  • 发表日期：

    2026年5月30日

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  • Safaa Farhood Madlul,
  • Aiyah S. Noori,
  • Wedian K. Abad,
  • Mohammed Jassim Mohammed Ali

摘要

Green synthesis offers an environmentally sustainable and cost-effective approach for the fabrication of semiconductor nanostructures. Using copper nitrate as a precursor and arabic gum extract as a natural reducing and stabilizing agent, CuO/Cu2O nanoparticles were effectively produced via a green synthesis method. The structural, morphological, and optical characteristics of the produced nanomaterials were examined using a variety of characterization methods. A mixed-phase CuO/Cu2O crystalline structure with high crystallinity was established by X-ray diffraction (XRD) investigation. The production of copper oxide bonds was confirmed by Fourier transform infrared (FTIR) spectroscopy, which showed distinctive Cu-O vibrational bands in the range of 665–750 cm−1. A plate-like shape with particle diameters roughly between 66 and 83 nm was revealed by scanning electron microscopy (SEM) research. Strong absorption in the ultraviolet and visible regions was found when optical characteristics were investigated using UV–Vis spectroscopy. The produced nanostructures were used to create a heterojunction photo detector based on Ag/p-CuO/n-Si. When exposed to light, the apparatus demonstrated a distinct photo response in the visible and near-infrared spectrum’s. The device’s capacity to detect low-intensity light was demonstrated by its specific detectivity, which reached about \(1.28 \times 10^{11}\) Jones. The mixed-phase structure and better charge transfer at the CuO/Cu2O interface are responsible for the improved performance. The findings show that green-synthesized copper oxide nanostructures have the potential to be used in low-cost optoelectronic sensing applications.