BaTiO2S

BaTiO₂S is a mixed-anion semiconductor compound combining barium, titanium, oxygen, and sulfur, belonging to the family of oxychalcogenides or sulfide-oxide perovskites. This material is primarily of research interest for photocatalytic and optoelectronic applications, where the incorporation of sulfur into a titanium oxide framework is expected to narrow the bandgap and enhance visible-light absorption compared to conventional titanium dioxide (TiO₂). While not yet widely established in mainstream industrial production, BaTiO₂S represents a promising avenue in the development of next-generation semiconductors for environmental remediation and energy conversion, particularly in applications where improved light harvesting under visible spectrum conditions is critical.