Luminescent property of CaWO₄:Eu³⁺ nanophosphors prepared by molten salt synthesis

Abstract

Red nanofluorescent materials based on CaWO₄:Eu³⁺ were prepared by the molten salt method. Spherical CaWO₄ particles with a size of 100 nm to 200 nm monodisperse sizes were prepared using different types of calcium salts. The KCl was chosen as the molten salt, under the same other experimental parameters, the obtained CaWO₄:Eu³⁺ particles were more uniform, the diffraction properties were better. With a molar ratio of 15 for molten salt and Calcium salt, more spherical CaWO₄:Eu³⁺ particles were produced small and sand homogeneous size. Using different amount of molten salt, it was found that the larger the amount of molten salt, the weaker the fluorescence property. Finally, by comparing the products obtained by the molten salt method with the solid state reaction method, it is found that the luminescence intensity of the products is 20% higher than that obtained by the solid state reaction method.

Keywords:

• Molten salt method
• CaWO₄:Eu³⁺
• nano phosphors

Disclosure statement

No potential conflict of interest was reported by the authors.