Journal
CHINESE PHYSICS B
Volume 25, Issue 2, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/1674-1056/25/2/027802
Keywords
molten-salt; barium tungsto-molybdate microcrystals; solid solution; deep-red-emitting
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Funding
- Construction Fund for Science and Technology Innovation Group from Jiangsu University of Technology, China
- Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, China [KHK1409]
- Priority Academic Program Development of Jiangsu Higher Education Institutions, China
- National Natural Science Foundation of China [21373103]
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Pr3+ -activated barium tungsto-molybdate solid solution phosphor Ba(Mo1-zWz)O-4: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(Mo1-zWz)O-4: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).
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