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

Figure 10

Phosphorescence decay curves of Sr₄Al₁₄O₂₅:Eu²⁺,Dy³⁺ phosphors with various Eu concentrations. Inserted figure shows the effect of Eu at.% on the PL intensity.