Local Structure of Europium‐Doped Luminescent Strontium Fluoride Nanoparticles: Comparative X‐ray Absorption Spectroscopy and Diffraction Study

Rare-earth based luminescent materials are key functional components for the rational design of light-conversion smart devices. Stable Eu3+-doped strontium fluoride (SrF2) nanoparticles were prepared at room temperature in ethylene glycol. Their luminescence depends on Eu content and changes after heat treatment. The crystallinity heat-treated material increases comparison with as-synthesized samples. Particles investigated solution using X-ray diffraction, small-angle scattering, spectroscopy. After treatment, size disordered together a change their local structure. Interstitial ions can be localized near Eu3+ ions. Therefore, non-radiative relaxation from other mechanisms is decreased. Knowledge about cation distribution information understanding properties any material.