Molten-salt synthesis and composition-dependent luminescent properties of barium tungsto-molybdate-based solid solution phosphors

doi:10.1088/1674-1056/25/2/027802

Abstract Pr³⁺-activated barium tungsto-molybdate solid solution phosphor Ba(Mo_1-zW_z)O₄:Pr³⁺ is successfully fabricated via a facile molten-salt approach. The as-synthesized microcrystal is of truncated octahedron and exhibits deep-red-emitting upon blue light excitation. Powder x-ray diffraction and Raman spectroscopy techniques are utilized to investigate the formation of solid solution phosphor. The luminescence behaviors depend on the resulting composition of the microcrystals with fixed Pr³⁺-doping concentration, while the host lattices remain in a scheelite structure. The forming solid solution via the substitution of [WO₄] for [MoO₄] can significantly enhance its luminescence, which may be due to the fact that Ba(Mo_1-zW_z)O₄:Pr³⁺ owns well-defined facets and uniform morphologies. Owing to its properties of high phase purity, well-defined facets, highly uniform morphologies, exceptional chemical and thermal stabilities, and stronger emission intensity, the resulting solid solution phosphor is expected to find potential applications in phosphor-converted white light-emitting diodes (LEDs).

Keywords: molten-salt barium tungsto-molybdate microcrystals solid solution deep-red-emitting

Received: 24 July 2015
Revised: 20 September 2015
Accepted manuscript online:

PACS:	78.55.-m	(Photoluminescence, properties and materials)
	33.50.Dq	(Fluorescence and phosphorescence spectra)
	78.30.-j	(Infrared and Raman spectra)
	61.05.cp	(X-ray diffraction)

Fund: Project supported by the Construction Fund for Science and Technology Innovation Group from Jiangsu University of Technology, China, the Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, China (Grant No. KHK1409), the Priority Academic Program Development of Jiangsu Higher Education Institutions, China, and the National Natural Science Foundation of China (Grant No. 21373103).

Corresponding Authors: Xiang-Hong He
E-mail: hexh@jsut.edu.cn

Cite this article:

Xiang-Hong He(贺香红), Zhao-Lian Ye(叶招莲), Ming-Yun Guan(关明云), Ning Lian(连宁), Jian-Hua Sun(孙建华) Molten-salt synthesis and composition-dependent luminescent properties of barium tungsto-molybdate-based solid solution phosphors 2016 Chin. Phys. B 25 027802

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Molten-salt synthesis and composition-dependent luminescent properties of barium tungsto-molybdate-based solid solution phosphors

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