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<p>Nanofilms structure of copper oxide are electrochemically synthesized by cyclic voltammetric electrodeposition, the deposition process consists to repeat the number of cycles on stainless steel substrates, in copper sulphate solution at temperatures of 60&#xa0;°C in neutral and alkaline pH. The obtained results, confirmed the successful fabrication of Cu<sub>2</sub>O thin films under 10 number of cycles. The characterization tools like Mott-Schottky measurements, Electrochemical impedance spectroscopy (EIS), X-ray diffraction, Fourier transform infrared spectroscopy (FTIR), UV-Visble spectroscopy, Scanning electron microscopy (SEM), Energy dispersive spectroscopy (EDS) graphics and Atomic force microscopy (AFM) are used to study the electrical, optical, morphological and structural, traits of the thin films deposited at different pH.</p><p>The photocurrent and Mott-Schottky measurements indicated that p-type and n-type Cu<sub>2</sub>O nanoparticles copper oxide are prepared by this novel approach by varying the concentration of OH<sup>−</sup> in the solution. The films formed have a polycrystalline cubic structure, characterized by a preferential orientation (111) with distinct surface morphologies and an optical band gap of 2.55&#xa0;eV. SEM and EIS revealed a correlation between variation in deposition pH and Cu<sub>2</sub>O film thickness. Using this original deposition technique, we also succeeded in superimposing an n-type film on a p-type film and thus developed a p-n homojunction of Cu<sub>2</sub>O. It can be concluded that copper oxide nanoparticles are convenient materials to be synthesized for solar energy production.</p>

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Characteristics related to electrochemical, optical, and structural properties of copper oxide nanofilms synthesized by cyclic voltammetry electrodeposition: towards innovative applications in photovoltaic solar cells

  • 期刊论文

  • 发表日期：

    2025年7月13日

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  • Kahina Aoudia,
  • Naima Brinis,
  • Houa Hammache,
  • El Hanafi Ouatah,
  • Nabila Cherchour,
  • Hassiba Tighidet

摘要

Nanofilms structure of copper oxide are electrochemically synthesized by cyclic voltammetric electrodeposition, the deposition process consists to repeat the number of cycles on stainless steel substrates, in copper sulphate solution at temperatures of 60 °C in neutral and alkaline pH. The obtained results, confirmed the successful fabrication of Cu2O thin films under 10 number of cycles. The characterization tools like Mott-Schottky measurements, Electrochemical impedance spectroscopy (EIS), X-ray diffraction, Fourier transform infrared spectroscopy (FTIR), UV-Visble spectroscopy, Scanning electron microscopy (SEM), Energy dispersive spectroscopy (EDS) graphics and Atomic force microscopy (AFM) are used to study the electrical, optical, morphological and structural, traits of the thin films deposited at different pH.

The photocurrent and Mott-Schottky measurements indicated that p-type and n-type Cu2O nanoparticles copper oxide are prepared by this novel approach by varying the concentration of OH− in the solution. The films formed have a polycrystalline cubic structure, characterized by a preferential orientation (111) with distinct surface morphologies and an optical band gap of 2.55 eV. SEM and EIS revealed a correlation between variation in deposition pH and Cu2O film thickness. Using this original deposition technique, we also succeeded in superimposing an n-type film on a p-type film and thus developed a p-n homojunction of Cu2O. It can be concluded that copper oxide nanoparticles are convenient materials to be synthesized for solar energy production.