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<p>Nanocrystalline thin films of Mn-substituted ZnO were prepared on a glass substrate at concentrations of 5% and 10%. Swift heavy ions (SHI) with a 50&#xa0;MeV kinetic energy of Li<sup>3+</sup> ion beam with a fluence of 1 × 10<sup>13</sup> ions cm<sup>−2</sup> were used to irradiate the films. The surface has been successfully modified after the irradiation. We investigated the structural, optical, morphological, photoluminescence, and antifungal activity of pure and Mn-doped ZnO thin films. The hexagonal structure of pure ZnO thin films explains the absence of any additional peaks. Photoluminescence spectra show a weak deep emission at about 540&#xa0;nm and a strong near-band-edge emission at about 509&#xa0;nm. UV–Vis absorption and photoluminescence (PL) spectra showed a red shift for the absorption edge and the near-band-edge emissions, respectively, whereas the SHI irradiation quenched the defect-related visible emission in the PL spectra. Using Penicillium Citrinum fungus, the antifungal activity was inhibited.</p> Graphical abstract <p></p>

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Li3+ swift heavy ion irradiation with 50 MeV kinetic energy influencing distinct properties and antifungal activity of Mn/ZnO thin films

  • 期刊论文

  • 发表日期：

    2024年12月31日

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  • H. A. Khawal,
  • N. D. Raskar,
  • D. V. Dake,
  • V. A. Mane,
  • R. B. Sonpir,
  • V. D. Mote,
  • K. Asokan,
  • B. N. Dole

摘要

Nanocrystalline thin films of Mn-substituted ZnO were prepared on a glass substrate at concentrations of 5% and 10%. Swift heavy ions (SHI) with a 50 MeV kinetic energy of Li3+ ion beam with a fluence of 1 × 1013 ions cm−2 were used to irradiate the films. The surface has been successfully modified after the irradiation. We investigated the structural, optical, morphological, photoluminescence, and antifungal activity of pure and Mn-doped ZnO thin films. The hexagonal structure of pure ZnO thin films explains the absence of any additional peaks. Photoluminescence spectra show a weak deep emission at about 540 nm and a strong near-band-edge emission at about 509 nm. UV–Vis absorption and photoluminescence (PL) spectra showed a red shift for the absorption edge and the near-band-edge emissions, respectively, whereas the SHI irradiation quenched the defect-related visible emission in the PL spectra. Using Penicillium Citrinum fungus, the antifungal activity was inhibited.

Graphical abstract