Th2 As2 S2

Th₂As₂S₂ is a ternary semiconductor compound containing thorium, arsenic, and sulfur, belonging to the class of mixed-valence chalcogenides with potential applications in solid-state electronics and materials research. This is primarily a research-phase material studied for its electronic and optical properties rather than an established industrial semiconductor; the thorium-arsenic-sulfur system is of academic interest for understanding phase relationships and semiconductor behavior in rare-earth-bearing compounds. While not widely deployed commercially, materials in this composition family are investigated for potential applications in radiation-hard electronics, specialized optoelectronics, and fundamental condensed-matter physics.