Co-precipitation synthesis of Y 2 O 2 SO 4 :Eu 3+ nanophosphor and comparison of photoluminescence properties with Y 2 O 3 :Eu 3+ and Y 2 O 2 S:Eu 3+ nanophosphors

Lian, Jingbao; Qin, Haili; Liang, Peng; Liu, Feng

doi:10.1016/j.solidstatesciences.2015.08.004

Cited by 25 publications

(13 citation statements)

References 26 publications

(24 reference statements)

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“…The Bu mode at 499.1 cm −1 is a translation of O, as shown in Figure 8f. Thus, we can conclude that the wide spectral band at 532 cm −1 in Infrared spectra is devoted to oxygen vibration in [Y2O2 2+ ] chains, but not to Y-O vibrations as was stated earlier [19,20,[31][32][33]. The assignment of remain vibrational modes is presented in Table 3.…”

Section: Resultssupporting

confidence: 64%

“…Connection of the OY 4 tetrahedra (Figure 5) into the chains creates the [Y 2 O 2 2+ ] layers as shown in Figure 7 and vibrations of these layers have been found in Raman spectra. Spectral band at 500 cm ] chains, but not to Y-O vibrations as was stated earlier [19,20,[31][32][33]. The assignment of remain vibrational modes is presented in Table 3.…”

Section: Resultsmentioning

confidence: 63%

“…The spectral bands at 1220, 1130, 1060, 1000, 880, 660 and 610 cm −1 were observed in Infrared spectra of Y2O2SO4:Eu 3+ and attributed to vibrations of SO4 2− ions, while the peak at 530 cm −1 was described as Y-O bond vibration [19]. In nanometer-sized Y2O2SO4:Eu 3+ , the Y-O bond peak was found at 560 cm −1 [31]. In Infrared spectra of Y2O2SO4 doped with Tb 3+ ions, characteristic spectral bands related to sulfate vibrations and the Y-O stretching (at 539 cm −1 ) were observed [20].…”

Section: Synthesis and Experimental Detailsmentioning

confidence: 99%

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Structural Features of Y2O2SO4 via DFT Calculations of Electronic and Vibrational Properties

Oreshonkov

Denisenko

2021

Materials

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The traditional way for determination of molecular groups structure in crystals is the X-Ray diffraction analysis and it is based on an estimation of the interatomic distances. Here, we report the analysis of structural units in Y2O2SO4 using density functional theory calculations of electronic properties, lattice dynamics and experimental vibrational spectroscopy. The Y2O2SO4 powder was successfully synthesized by decomposition of Y2(SO4)3 at high temperature. According to the electronic band structure calculations, yttrium oxysulfate is a dielectric material. The difference between the oxygen–sulfur and oxygen–yttrium bond nature in Y2O2OS4 was shown based on partial density of states calculations. Vibrational modes of sulfur ions and [Y2O22+] chains were obtained theoretically and corresponding spectral lines observed in experimental Infrared and Raman spectra.

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Section: Resultssupporting

confidence: 64%

Section: Resultsmentioning

confidence: 63%

Section: Synthesis and Experimental Detailsmentioning

confidence: 99%

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Structural Features of Y2O2SO4 via DFT Calculations of Electronic and Vibrational Properties

Oreshonkov

Denisenko

2021

Materials

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“…The electronegativity value (E°) of the

{SO}_{4}^{2 -}

(χ = 3.83 V) groups was higher than that of the OH − (χ = 3.08 V) groups. Therefore,

{SO}_{4}^{2 -}

groups tended to coordinate with Gd 3+ and Eu 3+ cations rather than OH − groups to form (Gd,Eu) 2 (OH) 4 SO 4 precursors . The chemical reaction of the precursor formation was as follows:

2 {(Gd, Eu)}^{3 +} + {SO}_{4}^{2 -} + 4 {OH}^{-} \Leftrightarrow {(Gd, Eu)}_{2} {(OH)}_{4} {SO}_{4} ((), precursor)

…”

Section: Resultsmentioning

confidence: 99%

Physical and optical studies of Gd₂O₂S:Eu³⁺ nanophosphors by microwave irradiation and γ‐irradiation methods

et al. 2019

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Gd 2 O 2 S:Eu 3+ nanophosphors have been successfully synthesized using microwave irradiation and γ-irradiation methods with polyvinyl pyrrolidone as a stabilizer. The physical and luminescence spectra were compared. The morphologies of both Gd 2 O 2 S:Eu 3+ nanophosphors were in the hexagonal phase and mainly consisted of spherical nanostructures with diameters of~90 nm and~50 nm for both microwave irradiation and γ-irradiation methods. Upon 325 nm of ultraviolet (UV) light excitation, strong red emissions (626 nm) were observed for both methods; these emissions corresponded to the 5 D 0 → 7 F 2 transition of Eu 3+ ions. However, Gd 2 O 2 S:Eu 3+ nanophosphors following microwave treatment showed better luminescence intensity than Gd 2 O 2 S:Eu 3+ nanophosphors treated with γ-irradiation. This difference was attributed to the crystallinity phase and surface quenching effects of Gd 2 O 2 S: Eu 3+ nanophosphors. The reaction mechanisms of Gd 2 O 2 S:Eu 3+ nanophosphors in both methods are discussed in detail.

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“…3. It shows sharp narrow bands at 624 and 580 cm -1 , which may be attributed to the S-O bending mode of SO [2][3][4] groups (24). The weak band at 760 cm -1 may be due to S-O bonding, whereas the sulfate vibration absorbing near 1000-1100 cm -1 is attributed to S = O symmetrical stretching (25).…”

Section: Ftir Analysismentioning

confidence: 99%

Synthesis and characterization of novel Na₁₅(SO₄)₅F₄Cl:Ce³⁺halosulfate phosphors

Bhake

Nair

Zade³

2016

Luminescence

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A series of Na (SO ) F Cl phosphors doped with Ce ions was prepared using the wet chemical method. X-Ray diffraction studies were used to determine their phase formation and purity. Fourier transform infrared spectroscopy effectively identified the chemical bonds present in the molecule. The photoluminescence properties of the as-prepared phosphors were investigated and the Ce ions in these hosts were found to give broadband emission in the UV range. For the thermoluminescence study, phosphors were irradiated with a 5 Gy dose of γ-rays from a Co source. Chen's half-width method was employed to calculate the trapping parameters from the thermoluminescence glow curve. Copyright © 2016 John Wiley& Sons, Ltd.

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Co-precipitation synthesis of Y 2 O 2 SO 4 :Eu 3+ nanophosphor and comparison of photoluminescence properties with Y 2 O 3 :Eu 3+ and Y 2 O 2 S:Eu 3+ nanophosphors

Cited by 25 publications

References 26 publications

Structural Features of Y2O2SO4 via DFT Calculations of Electronic and Vibrational Properties

Structural Features of Y2O2SO4 via DFT Calculations of Electronic and Vibrational Properties

Physical and optical studies of Gd₂O₂S:Eu³⁺ nanophosphors by microwave irradiation and γ‐irradiation methods

Synthesis and characterization of novel Na₁₅(SO₄)₅F₄Cl:Ce³⁺halosulfate phosphors

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Co-precipitation synthesis of Y 2 O 2 SO 4 :Eu 3+ nanophosphor and comparison of photoluminescence properties with Y 2 O 3 :Eu 3+ and Y 2 O 2 S:Eu 3+ nanophosphors

Cited by 25 publications

References 26 publications

Structural Features of Y2O2SO4 via DFT Calculations of Electronic and Vibrational Properties

Structural Features of Y2O2SO4 via DFT Calculations of Electronic and Vibrational Properties

Physical and optical studies of Gd2O2S:Eu3+ nanophosphors by microwave irradiation and γ‐irradiation methods

Synthesis and characterization of novel Na15(SO4)5F4Cl:Ce3+halosulfate phosphors

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Physical and optical studies of Gd₂O₂S:Eu³⁺ nanophosphors by microwave irradiation and γ‐irradiation methods

Synthesis and characterization of novel Na₁₅(SO₄)₅F₄Cl:Ce³⁺halosulfate phosphors