The sulfate ions modified YAG：Ce^（3＋） phosphors were prepared by co-precipitation method and characterized by X-ray diffraction,transmission electron microscopy,and photoluminescence.Effects of sulfate ions on the...The sulfate ions modified YAG：Ce^（3＋） phosphors were prepared by co-precipitation method and characterized by X-ray diffraction,transmission electron microscopy,and photoluminescence.Effects of sulfate ions on the photoluminescence（PL） property of the as-prepared YAG：Ce^（3＋） phosphors were studied,with sodium dodecyl sulfate（SDS） being added to R^（3＋）（Ce^（3＋）,Y^（3＋）,Al^（3＋）） ions.Results indicated that pure YAG：Ce^（3＋） phosphors with different ratios of sulfate ions could be easily obtained by calcining the as-synthesized precursor at 950 ℃ for 2 h,the YAG：Ce^（3＋） phosphors with an optimal mass ratio of 3.5 wt.%SDS had the highest emission intensity and the best dispersion behavior,and the fluorescence decay of the as-obtained YAG：Ce^（3＋） phosphors was related to the lattice defect,reabsorption and cross correlation.Furthermore,thermal quenching properties of the YAG：Ce^（3＋） phosphors and the YAG：Ce^（3＋） phosphors with 3.5 wt.%SDS were also discussed,indicating that the YAG：Ce^（3＋） with SDS phosphors could have potential applications in the daylight LEDs or warm white LEDs.展开更多
基金supported by the Research Fund for Doctoral Program of Higher Education of China(20120201130004)the Science and Technology Developing Project of Shaanxi Province(2015KW-001)+1 种基金the National Natural Science Foundation of China(61078058)Partially by the National Natural Science Foundation of China Major Research Plan on Nanomanufacturing(91323303)
文摘The sulfate ions modified YAG：Ce^（3＋） phosphors were prepared by co-precipitation method and characterized by X-ray diffraction,transmission electron microscopy,and photoluminescence.Effects of sulfate ions on the photoluminescence（PL） property of the as-prepared YAG：Ce^（3＋） phosphors were studied,with sodium dodecyl sulfate（SDS） being added to R^（3＋）（Ce^（3＋）,Y^（3＋）,Al^（3＋）） ions.Results indicated that pure YAG：Ce^（3＋） phosphors with different ratios of sulfate ions could be easily obtained by calcining the as-synthesized precursor at 950 ℃ for 2 h,the YAG：Ce^（3＋） phosphors with an optimal mass ratio of 3.5 wt.%SDS had the highest emission intensity and the best dispersion behavior,and the fluorescence decay of the as-obtained YAG：Ce^（3＋） phosphors was related to the lattice defect,reabsorption and cross correlation.Furthermore,thermal quenching properties of the YAG：Ce^（3＋） phosphors and the YAG：Ce^（3＋） phosphors with 3.5 wt.%SDS were also discussed,indicating that the YAG：Ce^（3＋） with SDS phosphors could have potential applications in the daylight LEDs or warm white LEDs.
