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Abstract <p>Ternary Cu<sub>2</sub>SnS<sub>3</sub> (CTS) thin films were successfully synthesized via chemical spray pyrolysis technique for potential use as absorber layers in thin-film solar cells. X-ray diffraction (XRD) analysis confirmed a single-phase tetragonal CTS with preferred orientations along the (112), (220), and (312) planes, while Scanning Electron Microscopy (SEM) revealed a dense and uniform granular structure. UV-Visible spectroscopy showed a high absorption coefficient and optical bandgap of 1.51 eV, confirming strong absorption in the visible range. X-ray Photoelectron Spectroscopy (XPS) verified the elemental composition and valence states of Cu, Sn, and S elements. These results suggest that CTS thin films fabricated via chemical spray pyrolysis are promising candidates for environmentally friendly and cost-effective photovoltaic absorber materials.</p>

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Structural, Optical, and Morphological Properties of Cu2SnS3 thin Films Synthesized via Chemical Spray Pyrolysis

  • 期刊论文

  • 发表日期：

    2026年3月4日

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  • F. Belarbi,
  • A. Smara,
  • A. Djelloul,
  • T. A. Benattia,
  • A. Bouchama

摘要

Abstract

Ternary Cu2SnS3 (CTS) thin films were successfully synthesized via chemical spray pyrolysis technique for potential use as absorber layers in thin-film solar cells. X-ray diffraction (XRD) analysis confirmed a single-phase tetragonal CTS with preferred orientations along the (112), (220), and (312) planes, while Scanning Electron Microscopy (SEM) revealed a dense and uniform granular structure. UV-Visible spectroscopy showed a high absorption coefficient and optical bandgap of 1.51 eV, confirming strong absorption in the visible range. X-ray Photoelectron Spectroscopy (XPS) verified the elemental composition and valence states of Cu, Sn, and S elements. These results suggest that CTS thin films fabricated via chemical spray pyrolysis are promising candidates for environmentally friendly and cost-effective photovoltaic absorber materials.