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<p>In this work, the micromorphology of the Ni @ amorphous carbon films and their relationship to other optical properties using atomic force microscopic (AFM) imaging were examined. The surface topography of these Ni @ amorphous carbon sheets was reported using stereometric analysis and the SPIPTM 6.7.4 software in compliance with ISO 25178-2:2012 and ASME B46.1-2009. It is clear that the Ni @ amorphous carbon films deposited at 180&#xa0;s had more the root mean square height (<i>Sq</i>) at around of 0.1475&#xa0;mm and has the greatest value in comparison to other films. The Ni @ amorphous carbon films deposited at 600&#xa0;s had a more regular surface because their the root mean square height (<i>Sq</i>) had minimum value of 0.1360&#xa0;mm. The peak energy positions of optical density for the films deposited at 180&#xa0;s which were the lowest value and about of 1.65&#xa0;eV, could be due the quasi-metallic mode. The cut-off energy for the skin/shell depth parameters of the Ni @ amorphous carbon films were about 3.5&#xa0;eV/ or 353&#xa0;nm. The Ni @ amorphous carbon films deposited at 180&#xa0;s had the lowest value of the electron - phonon interaction energy, (<i>Ee-p</i>). The small polaron model shown that as input photon energy was increased, the calculated AC conductivity by optical data for the Ni @ amorphous carbon films was decreased.</p>

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Effect of deposition rate on micromorphology analyses and optical parameters in amorphous carbon nickel thin films

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年5月10日

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  • Mostafa Khanmohammadi Padervand,
  • Vali Dalouji,
  • Dariush Mehrparvar

摘要

In this work, the micromorphology of the Ni @ amorphous carbon films and their relationship to other optical properties using atomic force microscopic (AFM) imaging were examined. The surface topography of these Ni @ amorphous carbon sheets was reported using stereometric analysis and the SPIPTM 6.7.4 software in compliance with ISO 25178-2:2012 and ASME B46.1-2009. It is clear that the Ni @ amorphous carbon films deposited at 180 s had more the root mean square height (Sq) at around of 0.1475 mm and has the greatest value in comparison to other films. The Ni @ amorphous carbon films deposited at 600 s had a more regular surface because their the root mean square height (Sq) had minimum value of 0.1360 mm. The peak energy positions of optical density for the films deposited at 180 s which were the lowest value and about of 1.65 eV, could be due the quasi-metallic mode. The cut-off energy for the skin/shell depth parameters of the Ni @ amorphous carbon films were about 3.5 eV/ or 353 nm. The Ni @ amorphous carbon films deposited at 180 s had the lowest value of the electron - phonon interaction energy, (Ee-p). The small polaron model shown that as input photon energy was increased, the calculated AC conductivity by optical data for the Ni @ amorphous carbon films was decreased.