Abstract
Mn4+ doped and Eu3+, Yb3+ co-doped MgAl2Si2O8-based phosphors were prepared by conventional solid state reaction at 1,300 °C. They were characterized by thermogravimetry, differential thermal analysis, X-ray powder diffraction, photoluminescence, and scanning electron microscopy. The luminescence mechanism of the phosphors, which showed broad red emission bands in the range of 600–715 nm and had a different maximum intensity when activated by UV illumination, was discussed. Such a red emission can be attributed to the intrinsic 2 E → 4 A 2 transitions of Mn4+.
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This study was supported by Erciyes University EUBAP under project number FBD-09-804.
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Çırçır, E., Kalaycioglu, N.O. Host-sensitized phosphorescence of Mn4+, Eu3+, and Yb3+ in MgAl2Si2O8 . J Therm Anal Calorim 110, 1179–1183 (2012). https://doi.org/10.1007/s10973-011-2118-0
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DOI: https://doi.org/10.1007/s10973-011-2118-0