Abstract
CZTSSe materials have been studied for a highly efficient solar cell. In this paper, Cu2ZnSn(S0.2Se0.8)(4) (CZTSSe) thin film was prepared and its application to photovoltaic solar cells was studied. The CZTSSe thin film was deposited using facile thermal evaporation process and examined by various techniques including X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), atomic force microscopy (AFM), Raman-scattering and Fourier transform infrared (FTIR) spectroscopy. Interestingly, the synthesized CZTSSe thin are exhibiting broad-spectrum absorption. The I-V characteristics were performed to study the photo-response of CZTSSe nanofilm. By the numerical simulation, the observed maximum efficiency of the fabricated device was similar to 16.5%. Therefore, the present study reveals that Cu2ZnSn(S0.2Se0.8)(4) thin films could be used as an effective absorber layer for efficient solar cells applications.