NaYF2

NaYF₄ (sodium yttrium fluoride) is an inorganic ceramic compound belonging to the fluoride family, commonly used as a host matrix for rare-earth dopants in photonic applications. It is widely employed in upconversion luminescence devices, medical imaging agents, and solid-state laser systems, where its low phonon energy and excellent optical transparency make it superior to oxide ceramics for these purposes. The material is particularly valued in biomedical and photonics industries for its ability to efficiently convert near-infrared light to visible emission when doped with lanthanide ions, enabling applications from deep-tissue imaging to anti-counterfeiting technologies.