“…Among the different environmentally friendly semiconductor materials under consideration as photoelectrodes the ternary chalcogenide semiconductors based on copper, Cu y MX z (M = Sn, Sb, Bi and X = S, Se, Te), have great prospects [ [14] , [15] , [16] , [17] ]. The Cu–Sb–S system is particularly interesting because of their conductivity type, abundant raw materials, and low toxicity.…”