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<p>Optoelectronic devices require materials with small particle sizes to facilitate more interactions and achieve high performance. The novel CaF<sub>2</sub>-doped ZnO nanofilms with different doping ratios (0.003, 0.005, and 0.007) wt% and thicknesses (75 and 100) nm were deposited on glass substrates using a thermal evaporation chamber in a vacuum environment (1 × 10<sup>–7</sup>) mbar. The morphology, structural, and optical properties of the prepared films were studied. The impurities inside the chamber were absent (because of the high vacuum), giving the small particle sizes deposited on the glass substrates. According to the X-ray diffraction finding, there are no distinctive peaks in the prepared nanofilms, except that the direction (002) correlates to the 2θ = (24.65, 24.72, 24.73°). AFM examination of CaF<sub>2</sub>-doped ZnO nanofilms reveals a homogeneous distribution and a consistent granular surface shape. As thickness and ratio doping for nanofilms rise, the optical characteristics (absorbance, absorption coefficient, optical constants) are studied. From the result data, it can candidate the prepared films as an active layer in solar cells and optoelectronic applications.</p>

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Thickness and CaF2 impact on the structural and optical properties of ZnO nanofilms for optoelectronic applications

  • 期刊论文

  • 发表日期：

    2025年9月28日

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  • Ayaat Gafar Jawad,
  • Khalid Haneen Abass,
  • Saba Razaq Salman

摘要

Optoelectronic devices require materials with small particle sizes to facilitate more interactions and achieve high performance. The novel CaF2-doped ZnO nanofilms with different doping ratios (0.003, 0.005, and 0.007) wt% and thicknesses (75 and 100) nm were deposited on glass substrates using a thermal evaporation chamber in a vacuum environment (1 × 10–7) mbar. The morphology, structural, and optical properties of the prepared films were studied. The impurities inside the chamber were absent (because of the high vacuum), giving the small particle sizes deposited on the glass substrates. According to the X-ray diffraction finding, there are no distinctive peaks in the prepared nanofilms, except that the direction (002) correlates to the 2θ = (24.65, 24.72, 24.73°). AFM examination of CaF2-doped ZnO nanofilms reveals a homogeneous distribution and a consistent granular surface shape. As thickness and ratio doping for nanofilms rise, the optical characteristics (absorbance, absorption coefficient, optical constants) are studied. From the result data, it can candidate the prepared films as an active layer in solar cells and optoelectronic applications.