Ba2InBiS5

Ba₂InBiS₅ is a quaternary sulfide semiconductor compound combining barium, indium, and bismuth in a sulfide matrix, representing an emerging material in the ternary and quaternary chalcogenide family. This composition is primarily of research interest for optoelectronic and photovoltaic applications, where bismuth-containing sulfides are being explored as alternatives to conventional semiconductor systems due to their tunable bandgap and potential for non-toxic, earth-abundant device architectures. While not yet widely commercialized, materials in this class are attracting attention as candidates for thin-film solar cells, infrared detectors, and other solid-state devices where layered sulfide structures offer advantages in charge transport and light absorption.