P16 Se20

P16 Se20 is a chalcogenide glass ceramic composed primarily of phosphorus and selenium, belonging to a family of materials studied for their unique optical and electronic properties in the infrared spectrum. This material is primarily of research and specialized industrial interest, used in infrared optics, photonic devices, and potential solid-state electrolyte applications where its selenium-rich composition offers advantages in thermal stability and refractive index control. Compared to conventional silicate glasses, chalcogenide ceramics like P16 Se20 excel in mid-to-far infrared transmission and can be engineered for specific refractive indices, making them valuable for niche photonic and sensing applications, though they typically require more careful handling due to moisture sensitivity.