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<p>The deposition of pure CuO and Zn: CuO nanostructure on glass substrates is investigated. The sol–gel method has been employed to synthesis undoped and Zn-doped CuO nanostructure. The structural and morphological propertiesareanalyzed and characterized by X-ray diffraction (XRD), Fourier transformation infrared (FTIR) spectroscopy and scanning electron microscopy (SEM). XRD and FTIR results confirm the synthesis of CuO monoclinic structure., The average crystallite sizeis dependent on %Zn doping CuO film and incorporation of %Zn content change of preferential orientation of CuO film from (111) plane to (002) plane. The optical properties are investigated by UV–vis spectrophotometer. The incorporation of Zn into CuO has resulted in a significant increasing in optical transmittanceaccompanied by increased optical band gap from 1.74&#xa0;eV to 2.19&#xa0;eV for 12 at% of Zn. The (RMS) roughness measured by atomic force microscopy (AFM) decreases from 5.86&#xa0;nm for pure CuO nanostructure to 4.2&#xa0;nm for Zn at % doped sample. The wetting properties areinvestigated using water contact angle measurements, revealing a transition from a slightly hydrophobic regime for CuO nanostructure to more hydrophilic behavior after incorporation of Zn.SEM has illustrated a granular morphology with grains of varying dimensions, the photocatalysis activity of CuO films has been improved with Zn doping.</p> Graphical abstract <p></p>

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Structural, optical, photocatalytic and surface wettability investigations of Zn-doped CuO nanostructure for optoelectronic applications

  • 期刊论文

  • 发表日期：

    2026年3月30日

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  • Lameche Norelhouda,
  • Melia Hamici,
  • Y. Al-Douri,
  • Abrouche Rokia,
  • M. Ameri

摘要

The deposition of pure CuO and Zn: CuO nanostructure on glass substrates is investigated. The sol–gel method has been employed to synthesis undoped and Zn-doped CuO nanostructure. The structural and morphological propertiesareanalyzed and characterized by X-ray diffraction (XRD), Fourier transformation infrared (FTIR) spectroscopy and scanning electron microscopy (SEM). XRD and FTIR results confirm the synthesis of CuO monoclinic structure., The average crystallite sizeis dependent on %Zn doping CuO film and incorporation of %Zn content change of preferential orientation of CuO film from (111) plane to (002) plane. The optical properties are investigated by UV–vis spectrophotometer. The incorporation of Zn into CuO has resulted in a significant increasing in optical transmittanceaccompanied by increased optical band gap from 1.74 eV to 2.19 eV for 12 at% of Zn. The (RMS) roughness measured by atomic force microscopy (AFM) decreases from 5.86 nm for pure CuO nanostructure to 4.2 nm for Zn at % doped sample. The wetting properties areinvestigated using water contact angle measurements, revealing a transition from a slightly hydrophobic regime for CuO nanostructure to more hydrophilic behavior after incorporation of Zn.SEM has illustrated a granular morphology with grains of varying dimensions, the photocatalysis activity of CuO films has been improved with Zn doping.

Graphical abstract