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<p>In<sub>2</sub>S<sub>3</sub> thin films were prepared by Chemical Spray Pyrolysis (CSP) method, and the deposit time varied from 2 to 20&#xa0;min. Thickness impacts on the physical and photosensitive properties of films have been investigated. X-ray diffraction patterns show that the layers are polycrystalline structures and the obtained material is β-In<sub>2</sub>S<sub>3</sub> with a mixture of cubic and tetragonal structures. The tetragonal phase is predominant with (103) preferential orientation. EDX result indicates that the molar ratio S/In moves from 1.35 to 1.52 with increasing deposit time. The optical transmission reaches a high value (&gt; 95%) in the visible and near-infrared regions. The band gap is direct, and its energy has been found in the range of 2.31–3.02&#xa0;eV. In addition, the photoluminescence (PL) study reveals blue, green, and red emissions. Photosensitive properties such as reproducibility, photosensitivity, responsivity and detectivity are also studied.</p>

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Physical and photosensitive properties of sprayed In2S3 thin films at varying deposition times

  • 期刊论文

  • 发表日期：

    2026年3月31日

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  • Messaoud Benfraj,
  • Riadh Souissi,
  • Belgacem Tiss,
  • Nejib Ihzaz,
  • Chaker Bouzidi,
  • L.assad El Mir,
  • Noureddine Bouguila

摘要

In2S3 thin films were prepared by Chemical Spray Pyrolysis (CSP) method, and the deposit time varied from 2 to 20 min. Thickness impacts on the physical and photosensitive properties of films have been investigated. X-ray diffraction patterns show that the layers are polycrystalline structures and the obtained material is β-In2S3 with a mixture of cubic and tetragonal structures. The tetragonal phase is predominant with (103) preferential orientation. EDX result indicates that the molar ratio S/In moves from 1.35 to 1.52 with increasing deposit time. The optical transmission reaches a high value (> 95%) in the visible and near-infrared regions. The band gap is direct, and its energy has been found in the range of 2.31–3.02 eV. In addition, the photoluminescence (PL) study reveals blue, green, and red emissions. Photosensitive properties such as reproducibility, photosensitivity, responsivity and detectivity are also studied.