Synthesis and characterization of Cu–Sb–S compound powders using polyol method

Abstract Copper–antimony–sulfur (Cu–Sb–S) compound powders were synthesized using a polyol method, and their structural and optical properties were investigated. Cu–Sb–S is a promising ternary semiconductor composed of low-cost, earth-abundant, and low-toxicity elements. The Cu–Sb–S powders were synthesized at temperatures ranging from 160 °C to 200 °C with a stirring speed of 600 rpm for 60 min under ambient pressure. X-ray diffraction and Raman spectroscopy revealed the formation of CuSbS 2 at 180 °C. The morphology and elemental composition of the Cu–Sb–S powders varied with the synthesis temperature. Based on the results obtained, the synthesis mechanism and optimal synthesis temperature for CuSbS 2 are discussed.