Giant Improvement on the Afterglow of Sr₄Al₁₄O₂₅:Eu²⁺,Dy³⁺ Phosphor by Systematic Investigation on Various Parameters

Figure 11

Variation of phosphorescence intensity of Sr₄Al₁₄O₂₅:Eu²⁺,Dy³⁺ phosphor with some of the charge compensating ions, each additives being 4 at.%.