Abstract
In this work, a simple and facile one-pot oleylamine solvothermal synthetic method was developed to synthesize Cu2ZnSnS4 (CZTS) nanocrystals. And the Cu2ZnSn(S,Se)4 (CZTSSe) thin films were prepared by selenizing CZTS nanocrystals. The obtained CZTS nanocrystals and CZTSSe films were studied using X-ray diffraction (XRD), transmission electron microscopy (TEM), scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDX), and ultraviolet–visible spectrophotometer (UV–Vis). TEM results show that the sphere–like CZTS nanoparticles with diameter between 12 and 35 nm are polydispersed. XRD studies indicate that the prepared CZTS nanocrystals form kesterite crystal structure, and the CZTSSe films with kesterite crystal structure are also obtained at the annealing temperatures of 500 and 550 °C. In particular after annealing at 500 °C for 20 min, the CZTSSe film exhibits a smooth, uniform, crack-free, and large-grained topography and possesses Cu-poor and Sn-rich composition. Moreover, it shows strong optical absorption from visible to near-infrared (IR) region, and its optical band gap (E g) is found to be about 1.44 eV.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
