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We synthesize continuous solid solutions with monophasic zircon-type structure of vanadates of formula YxBi0.95 VO4:0.05Dy^3+ (x = 0-0.95) using a combined method of co-precipitation and hydrothermal synthesis. The X-ray diffractometer patterns confirm the formation of a solid solution of YBi0.95-xVO4:0.05Dy^3+, and the results show that all the samples have monophasic zircon-type structure. The absorption spectra of the prepared phosphors show a blue-shift of the fundamental absorption band edge with increasing Y^3+ content. An intense tunable characteristic emission of Dy^3+ is observed with the increasing ratio of Y/Bi. Finally, the mechanism of luminescence of Dya+ in the YBi0.95 VO4:0.05Dya+ (x = 0-0.95) solid solution is analyzed and discussed. 相似文献
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We synthesize continuous solid solutions with monophasic zircon-type structure of vanadates of formula YxBi0.95-xVO4:0.05Dy3+(x = 0–0.95) using a combined method of co-precipitation and hydrothermal synthesis. The X-ray diffractometer patterns confirm the formation of a solid solution of YxBi0.95-xVO4:0.05Dy3+, and the results show that all the samples have monophasic zircon-type structure. The absorption spectra of the prepared phosphors show a blue-shift of the fundamental absorption band edge with increasing Y3+ content. An intense tunable characteristic emission of Dy3+ is observed with the increasing ratio of Y/Bi. Finally, the mechanism of luminescence of Dy3+ in the Y3xBi0.95-xVO4:0.05Dy+(x = 0–0.95) solid solution is analyzed and discussed. 相似文献
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Preparation and characterization of nanosized GdxBi0.95-xVO4:0.05Eu3+ solid solution as red phosphor 下载免费PDF全文
A complete solid solutions with monophasic zircon-type structure of vanadates of formula GdxBio.95-xVO4:0.05Eu3+ (x = 04).95) are synthesized by combined method of co-precipitation and hydrothermal synthesis. Their microstructures and morphologies are characterized by X-ray powder diffraction and transmission electronic microscope, and the results show that each of all the samples has a monophasic zircon-type structure. The absorption spectrum of the prepared phosphor shows a blue-shift of the fundamental absorption band edge with increasing the gadolinium content. Under UV-light and visible-light excitation, all the prepared phosphors show the typical luminescence properties of Eu3+ in the zircon-type structure. The emission intensity of GdxBi0.95-xVO4:0.05Eu3+ (x = 0.55) is strongest in all samples under UV-light and visible-light excitations. Finally, the mechanisms of luminescence of Eu3+ in the GdxBi0.95-xVO4:0.05Eu3+ (x = 0-0.95) solid solutions are analyzed and discussed. 相似文献
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