New alternative route for the preparation of phosphate glasses with persistent luminescence properties

In this paper, we investigate a new alternative route for the preparation of phosphate glasses with persistent luminescence properties. Phosphate glasses within the P₂O₅Na₂OCaO and P₂O₅Na₂OSrO systems were prepared by a standard melting process in air by adding Sr₄Al₁₄O₂₅:Eu²⁺,Dy³⁺ microparticles in the glass batch before melting. We found that all the investigated glasses show persistent luminescence. It is clearly shown that conventional melting in air of Sr₄Al₁₄O₂₅:Eu²⁺,Dy³⁺ microparticles in phosphate glass batch can be a new technique to prepare phosphate glasses with persistent luminescence properties.