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Luminescence Properties of Rare Earth–Doped Cubic Double Perovskite Tungstate Ba2(1−x)(Na,RE)xZnWO6 (RE = Ce3+, Eu3+ and Dy3+) Phosphors
Herein, the photoluminescence (PL) and thermoluminescence (TL) properties of rare earth doped cubic double perovskite tungstate Ba2(1−x)(Na,RE)xZnWO6 (RE = Ce3+, Eu3+ and Dy3+) phosphors synthesized by the solid‐state reaction method are presented. The self‐luminescence of pure Ba2ZnWO6 material in...
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Published in: | physica status solidi (b) 2021-04, Vol.258 (4), p.n/a |
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Main Authors: | , , , , |
Format: | Article |
Language: | English |
Subjects: | |
Online Access: | Get full text |
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Summary: | Herein, the photoluminescence (PL) and thermoluminescence (TL) properties of rare earth doped cubic double perovskite tungstate Ba2(1−x)(Na,RE)xZnWO6 (RE = Ce3+, Eu3+ and Dy3+) phosphors synthesized by the solid‐state reaction method are presented. The self‐luminescence of pure Ba2ZnWO6 material in the blue‐green region is enhanced by Ce3+ doping with its most effective concentration of 3 mol%. The dominant emission in orange (of Eu3+ at 597 nm) and blue (of Dy3+ at 485 nm) region in the emission spectra of Ba2(1−x)(Na,Eu)xZnWO6 and Ba2(1−x)(Na,Dy)xZnWO6 phosphor, respectively, shows highest intensity for 3 mol% of Eu3+ and 2 mol% of Dy3+ ion in the host lattice. The broad excitation band of Ce3+ and Dy3+ doped phosphor in the near UV region claims its candidature for solid‐state lighting. TL studies are also performed using γ‐radiation. Pure host material shows a simple glow curve while the rare earth ion doped phosphor shows a complex glow curve with enhanced intensity. Phosphor shows the fairly linear response up to 1 kGy radiation. Glow curves are deconvoluted and the trap parameters are calculated by Chen's peak shape method.
Herein, the photoluminescence and thermoluminescence properties of rare earth–doped cubic double perovskite tungstate phosphors are presented. Rare earth doping enhances the luminescence intensity of the host lattice. The Ce3+‐ and Dy3+‐doped phosphors can be excited by near‐UV light and exhibit green and greenish‐cyan color upon emission, which shows their applicability in UV‐chip‐fabricated light‐emitting diodes. |
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ISSN: | 0370-1972 1521-3951 |
DOI: | 10.1002/pssb.202000442 |