Abstract
Rare earth-doped Mg4Al2O7:Eu3+,Dy3+ and Ca4Al2O7:Eu3+,Dy3+ were synthesized by the solid-state reaction method at 1,400 °C. The phosphors were characterized by X-ray powder diffraction, photoluminescence, thermogravimetry and differential thermal analysis and scanning electron microscopy. X-ray powder diffraction studies show that the Mg4Al2O7:Eu3+,Dy3+ phosphor was crystallized in the triclinic crystal system but that Ca4Al2O7:Eu3+,Dy3+ was not. The phosphors show the characteristic broad band phosphorescence of Eu3+. This broad band phosphorescence has red emission bands in the range of 550–700 nm corresponding to 5 D 0 → 7 F j (j: 1, 2, 3,) transitions of Eu3+.
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This work was supported by Karamanoğlu Mehmetbey University BAP under Project Number 48-M-12.
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Öztürk, E., Karacaoglu, E. Investigation of phase formation dependency of photoluminescence properties of Eu3+ in Mg4Al2O7:Eu3+,Dy3+ and Ca4Al2O7:Eu3+,Dy3+ red-emitting phosphors. J Therm Anal Calorim 120, 1139–1143 (2015). https://doi.org/10.1007/s10973-015-4439-x
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DOI: https://doi.org/10.1007/s10973-015-4439-x