Abstract
BaAl2O4:Eu2+, Dy3+ phosphors with a good long lasting property can be easily obtained via a solid state reaction assisted with Li2CO3. The influence of Li2CO3 quantity on the lattice structure of BaAl2O4:Eu2+, Dy3+ phosphors, their photoluminescence (PL) property, and decaying process was studied by XRD, PL, and afterglow decay measurement, respectively. The results show that incorporating Li2CO3 in preparing process would obviously affect their lattice structure, accompanied by the variation of their luminescent property. With the increase of Li2CO3, their fluorescence property would gradually increase, at [Formula: see text] ([Formula: see text] reach their maximum emission intensity, and then decrease; but their phosphorescence property would continue to strengthen whether in brightness and decaying time up to [Formula: see text], and then decrease.
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