La2S3

Lanthanum sulfide (La₂S₃) is a rare-earth chalcogenide semiconductor compound combining lanthanum with sulfur, typically studied as a wide-bandgap semiconductor material for optoelectronic and photonic applications. This material is primarily of research and developmental interest rather than established high-volume production, with potential applications in infrared optics, photodetectors, and solid-state lighting where its optical transparency and electronic properties in the visible-to-infrared spectrum are advantageous compared to conventional semiconductors.