Cu2 S4

Cu₂S₄ is a copper sulfide semiconductor compound that belongs to the family of metal chalcogenides, which are materials composed of metals combined with sulfur or other chalcogen elements. This material is primarily of research interest for photovoltaic and optoelectronic applications, where its semiconducting properties and tunable bandgap make it a candidate for next-generation solar cells and light-emitting devices, though it remains less commercialized than established alternatives like CdTe or perovskites.