Preparation of ternary I-IV-VI nanocrystallines via a mild solution route

Cu- or Ag-containing ternary chalcogenides (Cu2SnS3, Cu2SnSe4, Ag8SnS6, and Ag8SnSe6) were prepared through a one-step solvothermal process in the temperature range of 150– 190°C. Three kinds of tin sources were investigated by changing the molar ratio, reaction time, and temperature. Powder X-ray diffraction (XRD), transmission electron microscopy (TEM), scanning electronic microscopy (SEM), and X-ray photoelectron spectroscopy (XPS) were used to characterize the products.