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A complete solid solutions with monophasic zircon-type structure of vanadates of formula GdxBi0.95-xVO4:0.05Eu3+(x = 0–0.95) 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.
A complete solid solutions with monophasic zircon-type structure of vanadates of formula GdxBi0.95-xVO4: 0.05Eu3 + (x = 0-0.95) are synthesized by a 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.