Cu2SnS3 thin film: Structural, morphological, optical and photoelectrochemical studies

Cu2SnS3 (CTS) thin film has been successfully deposited on the cost effective stainless steel substrate by simple and inexpensive chemical bath deposition method. The film is studied in term of their structural, morphological, optical and photoelectrochemical properties. The XRD study shows that CTS films consists a nanocrystalline structure with triclinic phase Raman analysis confirms the formation of CTS compound thin film. The SEM images show small crystallite grains of CTS material. The optical absorption study shows that the films have direct transitions with band gap energies of 1.35 eV. Moreover, the photoconversion efficiency of CTS thin film-based photoelectrochemical cell (PEC) is studied and found 0.12% efficiency.