Preparation and Luminescent Properties of NaY(WO4)2:Sm3+ Powders

Abstract

Abstract: A series of self-assembled 3D flower-like NaY_1-x(WO₄)₂:xSm³⁺(x=0, 0.005, 0.010, 0.015, 0.020, 0.025, 0.030) powders were prepared by hydrothermal method and high temperature sintering, with trisodium citrate as the anchoring agent. The phase structure, morphology, composition and luminescence properties were characterized by X-ray powder diffraction(XRD), scanning electron microscopy(SEM), infrared spectrum(FT-IR) and photoluminescence spectroscopy (PL), respectively. The results show that the synthesized samples are pure NaY(WO₄)₂ with tetragoonal scheelite structure. NaY(WO₄)₂:Sm³⁺ powders can be excited by a wavelength of 405 nm and exhibit a strong orange-red emission at 600 nm, corresponding to the ⁴G_5/2→⁶H_7/2 magnetic dipole transition of Sm³⁺. The optimum doping molar fraction of Sm³⁺ is determined to be of 0.015 based on the maximum intensity of fluorescence emission.

Key words: NaY(WO₄)₂, Sm³⁺doping, trisodium citrate, hydrothermal method, high temperature sintering, 3D flower shape, orange-red, phosphor powder, luminescent property

CLC Number:

MENG Xiaoyan, WU Bin, LIU Qing, WANG Yi, WU Xiuping. Preparation and Luminescent Properties of NaY(WO₄)₂:Sm³⁺ Powders[J]. JOURNAL OF SYNTHETIC CRYSTALS, 2022, 51(1): 120-125.

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Preparation and Luminescent Properties of NaY(WO₄)₂:Sm³⁺ Powders

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