Stabilization of divalent Eu²⁺ in fluorosilicate glass-ceramics via lattice site substitution.

ABSTRACT: Fluorosilicate glasses and glass-ceramics with MF₂ (M = Ca, Sr, Ba), ZnF₂ or LaF₃ components were investigated to host divalent Eu²⁺ for photoluminescence (PL) application. X-ray diffraction phase identification and a series of spectroscopic analyses were performed to reveal the relationship between microstructure and the reduction of Eu³⁺ → Eu²⁺. The precursor glasses were believed being constituted by silicate-rich phases and fluoride-rich phases, due to the immiscibility of fluoride-and-silicate mixed glass system. After heat treatment, the fluoride-rich glass phases could transform into fluoride crystalline phase in the glass-ceramics. Europium tended to enrich in the fluoride-rich phases in the glasses or in the precipi

SUBMITTER: Wang C 

PROVIDER: S-EPMC9086878 | biostudies-literature | 2018 Oct

REPOSITORIES: biostudies-literature