Abstract White-light-emitting (Ca 1−x M x )TiO 3 :Dy 3+ (M = Zn 2+ , Mg 2+ ) phosphors were synthesized via combustion. The phase compositions and morphologies of the (Ca 1−x Mg x )TiO 3 :Dy 3+ and (Ca 1−x Zn x )TiO 3 :Dy 3+ phosphors were investigated via X-ray powder diffraction and scanning electron microscopy, respectively. The luminescence of the (Ca 1−x Mg x )TiO 3 :Dy 3+ and (Ca 1−x Zn x )TiO 3 :Dy 3+ phosphors was characterized using photoluminescence spectra, which indicate that the best substitution concentration of both Zn 2+ ions and Mg 2+ ions is 4%. Moreover, a comparison of the luminescence intensities of the (Ca .96 Mg .04 )TiO 3 :Dy 3+ and (Ca .96 Zn .04 )TiO 3 :Dy 3+ phosphors indicates that the Zn 2+ ions could much more significantly enhance the luminescence intensity of CaTiO 3 :Dy 3+ phosphors. These results suggest that the (Ca .96 Zn .04 )TiO 3 :Dy 3+ phosphors excited by UV radiation are promising materials for white-light-emitting diodes.

中文翻译：

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(Ca 1-x M x )TiO 3 :Dy 3+ 荧光粉通过部分 M (Mg 2+ /Zn 2+ ) 替代白光发光二极管的发光增强

摘要 通过燃烧合成了发白光的 (Ca 1-x M x )TiO 3 :Dy 3+ (M = Zn 2+ , Mg 2+ ) 荧光粉。通过X射线粉末衍射和扫描电子显微镜研究了(Ca 1-x Mg x )TiO 3 :Dy 3+ 和(Ca 1-x Zn x )TiO 3 :Dy 3+ 荧光粉的相组成和形貌，分别。(Ca 1-x Mg x )TiO 3 :Dy 3+ 和 (Ca 1-x Zn x )TiO 3 :Dy 3+ 荧光粉的发光特性使用光致发光光谱表征，这表明两种 Zn 的最佳取代浓度2+ 离子和Mg 2+ 离子为4%。此外，比较 (Ca .96 Mg .04 )TiO 3 :Dy 3+ 和 (Ca .96 Zn .04 )TiO 3 :Dy 3+ 荧光粉的发光强度表明，Zn 2+ 离子可能更多显着增强CaTiO 3 :Dy 3+ 荧光粉的发光强度。