Investigation of the persistent luminescence of LiBaPO4:Eu2+


We investigated the persistent luminescence in europium-doped LiBaPO4. The persistent phosphors were synthesized via solid-state reaction method under mild reducing atmosphere. Its properties were investigated by x-ray diffraction, diffuse reflectance, photoluminescence, persistent luminescence, and thermoluminescence spectra. Under UV irradiation, broad-band persistent luminescence peaked at ∼470 nm was observed in the phosphors at room temperature. The effects of Eu2+ concentration on the persistent luminescence of LiBaPO4:Eu2+ were discussed. An energy level scheme was constructed to convey reasonable trapping and detrapping processes in the material.

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This work is supported by the National Natural Science Foundation of China (Grant No. 21271049).

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Correspondence to Yihua Hu.

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Ju, G., Hu, Y., Chen, L. et al. Investigation of the persistent luminescence of LiBaPO4:Eu2+. Journal of Materials Research 29, 519–526 (2014).

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