A single-phase NaCa2Mg2V3O12:Sm3+ phosphor: Synthesis, energy transfer, and luminescence properties

Cao, Renping; Wang, Xuantian; Jiao, Yuming; Ouyang, Xun; Guo, Siling; Liu, Pan; Ao, Hui; Cao, Chunyan

doi:10.1016/j.jlumin.2019.04.017

Cited by 62 publications

(5 citation statements)

References 30 publications

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“…When exciting the host at 345 nm (absorption maximum), a broad emission (400–700 nm) band peaking at about 511 nm exhibit luminescence in the bluish–green region. According to the earlier reports, this bluish–green luminescence of vanadate‐based systems might be attributed to ligand (2p of O 2− ) to metal (3d of V 5+ ) charge transfer bands localized within the tetrahedrally coordinated (VO 4 ) 3− groups 36 …”

Section: Resultsmentioning

confidence: 77%

“…According to the earlier reports, this bluish-green luminescence of vanadate-based systems might be attributed to ligand (2p of O 2− ) to metal (3d of V 5+ ) charge transfer bands localized within the tetrahedrally coordinated (VO 4 ) 3− groups. 36 Figure 7 depicts the excitation spectra (λ emi = 610 nm) of the host CLMV and the Eu 3+ ions doped at different concentrations (x = 0.00-0.09 mol) in the CLMV phosphors. As can be seen, the strong broad excitation band (for x = 0.01-0.09 mol) spanning from 220 to 400 nm might be attributed to the overlap of the transitions of (VO 4 ) 3− groups and form the charge transfer of O 2− to Eu 3+ (250 to 280 nm).…”

Section: Photoluminescence Studiesmentioning

confidence: 99%

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Structural characterization, energy transfer, and Judd–Ofelt analysis of pure and the Eu³⁺‐doped Ca₂LiMg₂V₃O₁₂ phosphors

Princy,

Annie Rathnakumari,

Masilla Moses Kennedy

2023

J Am Ceram Soc.

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A novel vanadate host Ca 2 LiMg 2 V 3 O 12 (CLMV) and the Eu 3+ -doped samples were synthesized via a solid-state reaction method. The phase formation and the morphological analysis were studied in detail. The Rietveld refinement result shows that the host belongs to cubic space group Ia-3d (230) with lattice parameter, a = 12.3948 Å, V = 1904.23 Å 3 , and Z = 8. The diffuse reflectance spectroscopy measurement estimated the bandgap of the host and the CLMV:0.05Eu 3+ phosphors. The host exhibits a broad absorption band (peak at 345 nm) ranging from 240 to 380 nm, which is attributed to the charge transfer in the O 2− -V 5+ complex. Under near UV excitation (λ exc = 345 nm), the host gives a broad emission band covering the visible region from 400 to 730 nm and the emission is in the bluish-green region of the CIE diagram. When the host is doped with the Eu 3+ ions and excited at 345 nm, the emission spectrum depicts the superimposition of the characteristic emission bands (red emission) of the Eu 3+ ions corresponding to the f-f transitions over the broad emission band of the host. The calculated color coordinates (9600 to 2280 K) demonstrated the color tuning ability of the phosphor as the dopant concentration is increased in the host. This is because the VO 4 3− group plays the sensitiser role and partially transfers energy with the Eu 3+ ions. When the same set of phosphors were excited at the dominant characteristic excitation band (λ exc = 394 nm) of the Eu 3+ , the characteristic emission bands of the Eu 3+ in the orange-red region were observed. As the electric dipole transition of the Eu 3+ was found to be dominant, the prepared phosphors possessed high color purity (CP). The energy transfer mechanism and the lifetime values were also presented. The temperature-dependent PL studies showed good thermal stability of the optimum sample. Various radiative transition properties were analyzed by the Judd-Ofelt theory. The photometric results reveal the color tuning ability and CP of the CLMV:xEu 3+ phosphors.

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Section: Resultsmentioning

confidence: 77%

Section: Photoluminescence Studiesmentioning

confidence: 99%

Structural characterization, energy transfer, and Judd–Ofelt analysis of pure and the Eu³⁺‐doped Ca₂LiMg₂V₃O₁₂ phosphors

Princy,

Annie Rathnakumari,

Masilla Moses Kennedy

2023

J Am Ceram Soc.

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“…Therefore the diffraction angle θ should be lower to keep the

italicnλ

value constant. [ 18 ] To obtain confirmation of the substitution of the Eu 3+ ion for the Y 3+ ion, an acceptable percentage difference D r was calculated using the following Equation (1): [ 19 ]

D_{r} goodbreak= \frac{R_{s} ((), CN) - R_{d} ((), CN)}{R_{s} ((), CN)} goodbreak\times 100 %

where R s and R d represent the ionic radii of substituted host ion Y 3+ and dopant ion Eu 3+ in the crystal lattice. It has been reported that to obtain the ideal substitution of doping ion in a crystal structure, the value of D r should not exceed 30%.…”

Section: Resultsmentioning

confidence: 99%

“…Therefore the diffraction angle θ should be lower to keep the nλ value constant. [18] To obtain confirmation of the substitution of the Eu 3+ ion for the Y 3+ ion, an acceptable percentage difference D r was calculated using the following Equation ( 1): [19] D…”

Section: Characterizationmentioning

confidence: 99%

Europium doped Sr₂YNbO₆ double perovskite phosphor for photoluminescence and thermoluminescence properties

et al. 2023

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A luminescent double perovskite phosphor Sr 2 YNbO 6 doped with Eu 3+ crystallized to the monoclinic phase and was synthesized successfully via a conventional hightemperature combustion method. The formation of the crystal structure, phase purity, and surface morphology were studied using X-ray diffraction patterns and scanning electron microscopy. The characteristic vibrations between the atoms of the functional groups present in phosphor were studied using Fourier transform infrared spectra analysis. The luminescence properties of the prepared phosphors were investigated in terms of photoluminescence (PL) and thermoluminescence (TL).PL excitation spectra exhibited charge transfer bands and the characteristic 4f 6 transitions of Eu 3+ . A prominent PL emission was obtained for the phosphor doped with 4 mol% Eu 3+ under the 396 nm excitation wavelength. PL emission quenching was

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“…12,13 So far, several garnet structured vanadates, such as LiCa 3 ZnV 3 O 12 , 14 NaCa 2 Mg 2 V 3 O 12 , 15,16 Ca 2 KZn 2 (VO 4 ) 3 , 17 and KCa 2 Mg 2 V 3 O 12 , 18 have been reported for the self-activating luminescent emissions. To expand the luminescent property of the garnet-structured vanadate phosphors, various rare earth ions have been introduced into these hosts, resulting in several new luminescent systems, such as NaCa 2 Mg 2 V 3 O 12 :Sm 3+ , 19 Ca 2 AgZn 2 V 3 O 12 :Nb 5+ , 20 CaZnV 2 O 7 :-Eu 3+ , 21 and Ca 2 KZn 2 V 3 O 12 :Dy 3+ . 22 Several questions should be discussed as the rare earth ions with characteristic luminescence being doped into hosts with self-activating emissions.…”

Section: Introductionmentioning

confidence: 99%

The synergism between self-activated and impurity-related emissions of LiCa₃ZnV₃O₁₂: lattice distortion, energy transfer and temperature sensing effect

Shi

Cao

et al. 2022

RSC Adv.

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A single-phase NaCa2Mg2V3O12:Sm3+ phosphor: Synthesis, energy transfer, and luminescence properties

Cited by 62 publications

References 30 publications

Structural characterization, energy transfer, and Judd–Ofelt analysis of pure and the Eu³⁺‐doped Ca₂LiMg₂V₃O₁₂ phosphors

Structural characterization, energy transfer, and Judd–Ofelt analysis of pure and the Eu³⁺‐doped Ca₂LiMg₂V₃O₁₂ phosphors

Europium doped Sr₂YNbO₆ double perovskite phosphor for photoluminescence and thermoluminescence properties

The synergism between self-activated and impurity-related emissions of LiCa₃ZnV₃O₁₂: lattice distortion, energy transfer and temperature sensing effect

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A single-phase NaCa2Mg2V3O12:Sm3+ phosphor: Synthesis, energy transfer, and luminescence properties

Cited by 62 publications

References 30 publications

Structural characterization, energy transfer, and Judd–Ofelt analysis of pure and the Eu3+‐doped Ca2LiMg2V3O12 phosphors

Structural characterization, energy transfer, and Judd–Ofelt analysis of pure and the Eu3+‐doped Ca2LiMg2V3O12 phosphors

Europium doped Sr2YNbO6 double perovskite phosphor for photoluminescence and thermoluminescence properties

The synergism between self-activated and impurity-related emissions of LiCa3ZnV3O12: lattice distortion, energy transfer and temperature sensing effect

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Product

Resources

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Structural characterization, energy transfer, and Judd–Ofelt analysis of pure and the Eu³⁺‐doped Ca₂LiMg₂V₃O₁₂ phosphors

Structural characterization, energy transfer, and Judd–Ofelt analysis of pure and the Eu³⁺‐doped Ca₂LiMg₂V₃O₁₂ phosphors

Europium doped Sr₂YNbO₆ double perovskite phosphor for photoluminescence and thermoluminescence properties

The synergism between self-activated and impurity-related emissions of LiCa₃ZnV₃O₁₂: lattice distortion, energy transfer and temperature sensing effect