Cu3PSe2S2

Cu3PSe2S2 is a quaternary chalcogenide compound combining copper with phosphorus, selenium, and sulfur—a mixed-anion semiconductor material in the emerging class of multinary metal chalcogenides. This is primarily a research-phase material under investigation for optoelectronic and thermoelectric applications, rather than an established industrial product; the material family shows promise for photovoltaic absorbers, solid-state radiation detection, and energy conversion devices where tunable bandgap and mixed-anion chemistry offer advantages over conventional binary or ternary semiconductors.