Citation: YANG Yang, CONG Yan, XIAO Yu, FU Yue, XIA Sheng-Qiang, DONG Bin. Luminescent and Long-Lasting Properties of Cd3Al2Ge3O12:Mn2+ Phosphor[J]. Chinese Journal of Inorganic Chemistry, ;2015, 31(8): 1529-1533. doi: 10.11862/CJIC.2015.207
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Cd3Al2Ge3O12:Mn2+ afterglow phosphors were synthesized by the conventional solid-state reaction in this work, and the enhanced afterglow properties were observed with Zr4+ ions co-doping. The Cd3Al2Ge3O12:Mn2+, Zr4+ phosphors were characterized by using XRD, photoluminescence and thermoluminescence spectroscopy. The emission spectrum shows a broad emission band from 500 to 700 nm which is assigned to the 4T1(4G)→6A1(6S) transitions of Mn2+ ion. An energy transfer from the Cd3Al2Ge3O12 host to Mn2+ ions was observed. The center and the profile of the emission remain unchanged when co-doped with Zr4+ ions, but the introduction of Zr4+ ions improved the afterglow duration. Thermoluminescence spectra indicated that the introduction of Zr4+ into the host produces traps with suitable depth, resulting in the enhanced phosphorescence of Mn2+.
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