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

Figure 7

EDS mapping of Eu ((a), (c), and (e)) and Dy ((b), (d), and (f)) in strontium aluminate phosphors prepared with different H₃BO₃ concentrations: ((a), (b)) 0 mol%, ((c), (d)) 40 mol%, and ((e), (f)) 100 mol%.

(a)

(b)

(c)

(d)

(e)

(f)