d–f luminescence of CeSubscript3+/Subscript and EuSubscript2+/Subscript ions in BaAlSubscript2/SubscriptOSubscript4/Subscript, SrAlSubscript2/SubscriptOSubscript4/Subscript and CaAlSubscript2/SubscriptOSubscript4/Subscript phosphors

K. A. Gedekar; S. P. Wankhede; S. V. Moharil; R. M. Belekar

首页> 外文期刊>Journal of Advanced Ceramics >d–f luminescence of CeSubscript3+/Subscript and EuSubscript2+/Subscript ions in BaAlSubscript2/SubscriptOSubscript4/Subscript, SrAlSubscript2/SubscriptOSubscript4/Subscript and CaAlSubscript2/SubscriptOSubscript4/Subscript phosphors

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d–f luminescence of CeSubscript3+/Subscript and EuSubscript2+/Subscript ions in BaAlSubscript2/SubscriptOSubscript4/Subscript, SrAlSubscript2/SubscriptOSubscript4/Subscript and CaAlSubscript2/SubscriptOSubscript4/Subscript phosphors

机译：BaAl 2 O 4 ，SrAl 3 + 和Eu 2 + 离子的df发光> 2 O 4 和CaAl 2 O 4 荧光粉

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Ce3+ and Eu2+ doped alkaline earth aluminates MAl2O4 (M = Ca, Sr, Ba) were prepared by single-step combustion synthesis at low temperature (600 °C). X-ray diffraction (XRD) analysis confirmed the formation of BaAl2O4, CaAl2O4, and SrAl2O4. Photoluminescence spectra and optimal luminescent properties of Ce3+ and Eu2+ doped MAl2O4 phosphors were studied. Relation between Eu2+ and Ce3+ f–d transitions was explained. Spectroscopic properties known for Ce3+ were used to predict those of Eu2+ by using Dorenbos’ method. The values thus calculated were in excellent agreement with the experimental results. The preferential substitution of Ce3+ and Eu2+ at different Ba2+, Sr2+, Ca2+ crystallographic sites was discussed. The dependence of emission wavelengths of Ce3+ and Eu2+ on local symmetry of different crystallographic sites was also studied by using Van Uitert’s empirical relation. Experimental results matched excellently with the predictions of Dorenbos’ and Van Uitert’s models.

机译：Ce3 +和Eu2 +掺杂的碱土金属铝酸盐MAl2O4（M = Ca，Sr，Ba）是通过在低温（600°C）下一步燃烧合成而制备的。 X射线衍射（XRD）分析证实了BaAl2O4，CaAl2O4和SrAl2O4的形成。研究了Ce3 +和Eu2 +掺杂的MAl2O4荧光粉的光致发光光谱和最佳发光性能。解释了Eu2 +和Ce3 + f–d跃迁之间的关系。 Ce3 +的光谱性质通过Dorenbos方法被用来预测Eu2 +的光谱性质。这样计算出的值与实验结果非常吻合。讨论了在不同Ba2 +，Sr2 +，Ca2 +晶体学位置上Ce3 +和Eu2 +的优先取代。利用范伊特的经验关系，研究了Ce3 +和Eu2 +的发射波长对不同晶体位点局部对称性的依赖性。实验结果与Dorenbos和Van Uitert模型的预测非常吻合。

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《Journal of Advanced Ceramics》 |2017年第4期|共10页
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K. A. Gedekar; S. P. Wankhede; S. V. Moharil; R. M. Belekar;
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中图分类硅酸盐工业;
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d–f luminescence of CeSubscript3+/Subscript and EuSubscript2+/Subscript ions in BaAlSubscript2/SubscriptOSubscript4/Subscript, SrAlSubscript2/SubscriptOSubscript4/Subscript and CaAlSubscript2/SubscriptOSubscript4/Subscript phosphors

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