摘要

A flexible CZTSSe thin film solar cell was fabricated on a titanium foil substrate by magnetron sputtering and subsequent selenization annealing treatment. The effects of different selenization temperatures on the composition, phase, surface morphology and solar cell performance of CZTSSe films were studied by X-ray diffraction (XRD), Raman spectroscopy (Raman) and scanning electron microscopy (SEM). The results show that the CZTSSe film prepared at 580 ℃ selenization temperature had the best crystal quality and density, showing that the proportion of chemical elements was Cu-poor and Zn-rich. And the flexible thin-film solar cell produced at this temperature has the best performance with the highest conversion efficiency of 2.27%.