B2 Cu2 Se4

B2 Cu₂Se₄ is a quaternary semiconductor compound belonging to the chalcogenide family, combining copper and selenium with boron in a specific stoichiometric ratio. This material is primarily of research interest for photovoltaic and thermoelectric applications, where its direct bandgap and electronic properties make it a candidate for next-generation energy conversion devices. The compound represents an exploratory alternative to more established Cu-Se systems, with potential advantages in tunable electronic structure, though it remains largely in the development phase outside specialized research laboratories.