Abstract
Cu2ZnSnS4 (CZTS) functional thin films have been successfully synthesized using the spray pyrolysis method in a single deposition process and under atmospheric pressure. The samples have been deposited on glass substrates under different growth temperatures ranging from 350 °C to 450 °C. The solution has been prepared using Copper chloride dihydrate, Zinc chloride, Tin chloride dihydrate, and Thiourea as Copper, Zinc, Tin and Sulfur sources respectively. The structural, optical, morphological and electrical properties of CZTS films have been investigated. X-ray diffraction (XRD) and Raman spectroscopy have confirmed the kesterite structure of all samples without any secondary phase. The surface morphology and topography of the samples have been examined by scanning electron microscopy (SEM) and atomic force microscopy (AFM). Data from UV–Vis spectroscopy analysis and Hall effect measurement showed that CZTS films elaborated at 400 °C have an optimum band gap (Eg = 1.5 eV), low resistivity (1.7239 × 10−2 Ω.cm), and high conductivity (58.00 (Ω.cm)−1).
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