Luminescence properties of Eu3+‐doped MgAl2O4 nanopowders synthesized by micro‐emulsion method
Luminescence properties of Eu3+‐doped MgAl2O4 nanopowders synthesized by micro‐emulsion method
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DOI：
10.1002/pssa.201431268
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发表时间：
2014-08
期刊：
影响因子：
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通讯作者：
W. Guan;Jinhong Li;Xiang Wang
中科院分区：
文献类型：
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作者：
W. Guan;Jinhong Li;Xiang Wang
采用微乳液法合成了MgAl 2 O 4：Eu 3+红色荧光粉。通过激发光谱和发射光谱研究了不同Eu ~（3+）离子浓度（0- 5mol%）的荧光粉在室温下的光致发光特性。通过X射线衍射（XRD）和透射电子显微镜（TEM）进一步表征磷光体。结果表明，在1000 °C下合成了纯的MgAl 2 O 4尖晶石。在TEM下观察到MgAl 2 O 4尖晶石微晶的尺寸在1000 °C下约为10 nm，在1200 °C下约为30 nm，这与通过Scherrer方程计算的尺寸一致。MgAl 2 O 4：Eu 3+荧光粉在615 nm处具有典型的红光发射，对应于5D 0 → 7 F2跃迁。
Red‐light emitting MgAl2O4:Eu3+ nanophosphors were synthesized by a micro‐emulsion method. The photoluminescence properties of the phosphors with different Eu3+ ion concentrations (0–5 mol%) were investigated though excitation and emission spectroscopy at room temperature. The phosphors were further characterized by X‐ray diffraction (XRD) and transmission electron microscopy (TEM). The results show that pure MgAl2O4 spinels were synthesized at 1000 °C. The MgAl2O4 spinel crystallite size was observed under TEM about 10 nm at 1000 °C and 30 nm at 1200 °C, which was consistent with the size calculated by the Scherrer equation. The MgAl2O4:Eu3+ phosphors show typical red emission at 615 nm, which corresponds to the 5D0 → 7F2 transition.