Solvothermal fabrication and luminescent properties of Eu2+/Gd3+ doped potassium magnesium fluoride
Solvothermal fabrication and luminescent properties of Eu2+/Gd3+ doped potassium magnesium fluoride
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Eu2/Gd3掺杂氟化钾镁的溶剂热制备及其发光性能
DOI：
10.1016/j.jfluchem.2016.05.012
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发表时间：
2016-08
影响因子：
1.9
通讯作者：
Xiaoping Zhou
中科院分区：
文献类型：
--
作者：
Guoxian Zhu;Mubiao Xie;Rongkai Pan;Xiaoping Zhou
通过溶剂热技术在200 °C下5天合成了纯相Gd/Eu掺杂和共掺杂的KMgF 3磷光体。采用X射线粉末衍射（XRD）和环境扫描电子显微镜（ESEM）对产物的晶体结构、粒径和形貌进行了表征。用荧光分光光度计测量了稀土离子掺杂KMgF 3的激发光谱和发射光谱，讨论了Gd 3+离子摩尔分数对Eu 2+离子发光的影响。在Eu ~（2+）和Gd ~（3+）共掺杂体系中，随着Gd ~（3+）浓度的增加，Eu ~（2+）离子的发光强度逐渐增强，Eu ~（2+）荧光增强的原因是Gd ~（3+）在基质中向Eu ~（2+）进行了有效的能量转移。此外，还对能量传递机理进行了详细的讨论。这些结果表明，KMgF_3：Gd ~（3+），Eu ~（2+）荧光粉是一种很有前途的短波激光材料。
Phase-pure Gd-/Eu-doped and co-doped KMgF3phosphors are synthesized by solvothermal techniques at 200 °C for 5 days. The crystal structure, particle size and morphologies of the as-synthesized products are investigated by X-ray powder diffraction (XRD) and environment scanning electron microscopy (ESEM). The excitation and emission spectra of the rare earth ions doped KMgF3are measured by the fluorescence spectrophotometer and the effects of Gd3+ions molar fraction on the luminescence of Eu2+ions are discussed. In the co-doped Eu2+and Gd3+system, the emission intensity of Eu2+ion gradually increases with the increasing Gd3+concentration, and the enhancement of Eu2+fluorescence is due to an efficient energy transfer from Gd3+to Eu2+in the host. In addition, the mechanism of energy transfer has been discussed in detail. These results suggest that the phosphors of KMgF3: Gd3+, Eu2+would become promising short-wave laser materials.
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影响因子：
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作者：
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影响因子：
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