CuSnS3

CuSnS3 is a ternary copper-tin sulfide compound belonging to the metal sulfide family, characterized by mixed-valence coordination chemistry. This material is primarily investigated in research contexts for semiconductor and photovoltaic applications, where its tunable band gap and earth-abundant constituent elements offer potential advantages over conventional cadmium- or lead-based alternatives; industrial adoption remains limited, but the material class shows promise for thin-film solar cells, photoelectrochemical devices, and potentially low-cost optoelectronic components where material cost and toxicity constraints drive material selection.