In4S3N2

In₄S₃N₂ is an indium sulfur nitride ceramic compound that combines metallic indium with sulfur and nitrogen elements to form a ternary ceramic phase. This material belongs to the family of metal chalcogenitride and metal nitride ceramics, which are of primary interest in solid-state electronics and photonic research rather than established industrial production. The compound represents an exploratory composition in the search for semiconducting and potentially luminescent ceramics with applications in optoelectronic devices, though it remains largely in the research phase without widespread commercial deployment.