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<p>This work focuses on the improvement of Cu<sub>2</sub>CoSnS<sub>4</sub> thin films deposited by immersion. The resulting films were characterized using X-ray diffraction (XRD), Raman spectroscopy (Raman), energy-dispersive spectroscopy (EDS), scanning electron microscopy (SEM), UV–Vis spectrophotometry, and the four-probe technique (FPP) to investigate their structural, optical, morphological, and electrical properties. XRD analysis indicates the formation of a pure stannite phase with a crystallite size of approximately 10.08&#xa0;nm. Raman spectroscopy confirms the XRD results, revealing a vibrational mode at 332&#xa0;cm-¹. Morphological examination demonstrates a compact surface structure, while elemental composition measurements confirm the synthesis of a quasi-stoichiometric CCTS material. The band gap of the CCTS absorber is approximately 1.53&#xa0;eV. Furthermore, the dispersion parameters were determined using the Wemple–DiDomenico model. The nonlinear optical properties of the dip-coated CCTS films were also investigated, and the sheet resistance was found to be about 5.68 MΩ/sq. Finally, a solar cell with the configuration Al/AZO/i-ZnO/CdS/CCTS/Mo/glass, simulated using SCAPS-1D, exhibited a conversion efficiency of 16.32%, a fill factor of 78.51%, an open-circuit voltage of 0.86&#xa0;V, and a short-circuit current density of 23.97&#xa0;mA/cm².</p>

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Synthesis, analysis and characterization of Cu2CoSnS4 absorber material deposited by simple and low-cost dip-coating technique for solar cells applications

  • 期刊论文

  • 发表日期：

    2026年5月21日

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  • Ahmed Ziti,
  • Bouchaib Hartiti,
  • Mondjou Georges Constant Beh,
  • Ahmed Kotbi,
  • Youssef Nouri,
  • Hervé Joël Tchognia Nkuissi,
  • Abdelkrim Batan,
  • Hicham Labrim,
  • Mustapha Jouiad,
  • Philippe Thevenin

摘要

This work focuses on the improvement of Cu2CoSnS4 thin films deposited by immersion. The resulting films were characterized using X-ray diffraction (XRD), Raman spectroscopy (Raman), energy-dispersive spectroscopy (EDS), scanning electron microscopy (SEM), UV–Vis spectrophotometry, and the four-probe technique (FPP) to investigate their structural, optical, morphological, and electrical properties. XRD analysis indicates the formation of a pure stannite phase with a crystallite size of approximately 10.08 nm. Raman spectroscopy confirms the XRD results, revealing a vibrational mode at 332 cm-¹. Morphological examination demonstrates a compact surface structure, while elemental composition measurements confirm the synthesis of a quasi-stoichiometric CCTS material. The band gap of the CCTS absorber is approximately 1.53 eV. Furthermore, the dispersion parameters were determined using the Wemple–DiDomenico model. The nonlinear optical properties of the dip-coated CCTS films were also investigated, and the sheet resistance was found to be about 5.68 MΩ/sq. Finally, a solar cell with the configuration Al/AZO/i-ZnO/CdS/CCTS/Mo/glass, simulated using SCAPS-1D, exhibited a conversion efficiency of 16.32%, a fill factor of 78.51%, an open-circuit voltage of 0.86 V, and a short-circuit current density of 23.97 mA/cm².