Cu23Sb8S26

Cu23Sb8S26 is a complex ternary sulfide compound combining copper, antimony, and sulfur—a compositionally defined intermetallic or chalcogenide phase rather than a traditional alloy. This material falls within the copper-antimony-sulfide family, which has attracted research interest for thermoelectric applications, optoelectronic devices, and solid-state chemistry due to its mixed-valence structure and potential semiconducting behavior. Its industrial adoption remains limited and primarily experimental; it is studied as a candidate for niche thermoelectric energy conversion or as a precursor phase in materials synthesis rather than as a mainstream engineering structural material.