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

Figure 5

Excitation (dotted lines) and emission (solid lines) spectra of Sr₄Al₁₄O₂₅:Eu²⁺,Dy³⁺, 𝑥 mol% H₃BO₃ phosphor. Inset shows the digital micrograph of 40 mol% B contained phosphor in black light.