Synthesis and photoluminescence properties of the novel Eu3+-activated CaNa(PO3)3 phosphors

Wang, Shengjia; Xu, Chenchen; Qiao, Xuebin

doi:10.1007/s10854-020-03503-7

Cited by 4 publications

(2 citation statements)

References 39 publications

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“…Compared with the reported commercial red phosphor Y 2 O 3 : Eu 3+ (12%, λex = 395 nm), the QE value in this work is 7.22 times higher than that of it. Table I gives the QE values comparison of some reported Eu 3+ -activated red phosphors [49][50][51][52][53] with LYSO:Eu. Among many red phosphors with excellent luminous properties, the QE of LYSO:Eu in this work is the highest and it is much higher than the commercial red phosphors (Y 2 O 3 : Eu 3+ ), which indicates the high superior in application of white light LED.…”

Section: Effect Of Somentioning

confidence: 99%

Emission Enhancement of Eu³⁺ Ions in LiY(PO₃)₄ Phosphate Phosphors via Anionic SO₄ ²⁻ Substitution

Qiao¹,

Zhao²,

Xu³

et al. 2023

ECS J. Solid State Sci. Technol.

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Eu3+-doped LiY(PO3)4(1-x)(SO4)4x (LYSO:Eu) phosphors are synthesized by high-temperature solid-phase method and the crystal structure, microscopic morphology, and photo-spectrographic characteristics are analyzed. The phosphor exhibits the strongest excitation peak at 397 nm, which indicates that the sample can be effectively excited by the near-ultraviolet/ultraviolet LED chip. The characteristic emission peaks of Eu3+ ion 5D0→7FJ (J = 1 ~ 4) are observed from the PL spectrum, and the orange emission peak originating from the magnetic dipole transition 5D0→7F1 of Eu3+ is located near 597 nm. When the SO42- concentration exceeds 22.5 mol%, the quenching of the phosphor occurs. The Eu3+ emission still retains 78.8% of the initial strength at 495 K, with excellent thermal stability. The emission intensity is decreased with the increase of SO42- concentration, indicating that the SO42- co-doping led to an increase in the probability of non-radiative transitions. The best quantum efficiency of the LiY0.95(PO3)2.6(SO4)1.4: 0.05Eu3+ sample is 86.65%, and the CIE chromaticity coordinates of this sample are (0.653, 0.347), which are close to the international standard red color coordinates (0.67, 0.33). These results indicate that LYSO:Eu has a good application prospect in NUV/UV excited white LEDs. Influence of anionic substitutions of SO42- to the optical properties is discussed.

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Section: Effect Of Somentioning

confidence: 99%

Emission Enhancement of Eu³⁺ Ions in LiY(PO₃)₄ Phosphate Phosphors via Anionic SO₄ ²⁻ Substitution

Qiao¹,

Zhao²,

Xu³

et al. 2023

ECS J. Solid State Sci. Technol.

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“…Because a large amount of energy consumption during sintering can be reduced. [17][18][19][20] In this paper, a series of Ca(PO 3 ) 2 :xEu (referred to as Ca(PO 3 ) 2 :xEu(x = 0, 0.05, 0.10, 0.15, 0.20, 0.25) phosphors were successfully synthesized in the atmosphere using a high-temperature solid-phase method, and the luminescence of the phosphors exhibited bright tunable emission in the blue region and the red region by a rare-earth ion Eu doping process. The self-reduction of Eu 3+ → Eu 2+ in Ca(PO 3 ) 2 matrix under atmospheric conditions is achieved, and the factors affecting the phosphor structure and properties are investigated.…”

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confidence: 99%

Self-Reduction Mechanism and Luminescence Properties of Eu²⁺-Eu³⁺Doped Ca(PO₃)₂ Phosphor

Lu¹,

Ma²,

Li³

et al. 2022

ECS J. Solid State Sci. Technol.

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A series of Ca(PO3)2 phosphors mono-doped with Eu3+ were successfully synthesized by the conventional high-temperature solid-phase method. Rietveld correction of the X-ray diffraction shows that Eu3+ ions occupy Ca2+ positions in the Ca(PO3)2 lattice and have no effect on the matrix structure. In this work, the self-reduction of Eu3+ was observed and verified by photoluminescence, excitation spectroscopy, and X-ray photoelectron spectroscopy. Under excitation at 238nm, Ca(PO3)2: Eu exhibits a broad blue Eu2+ emission band in addition to the usual orange-red emission of Eu3+. The fact that europium ions exist in divalent and trivalent forms is further confirmed, and the corresponding mechanism of the anomalous reduction of Eu3+ to Eu2+ is discussed. On this basis, the effect of Eu concentration on the structure and luminescence properties of Ca(PO3)2 phosphor was investigated in detail. The luminescence of the phosphor exhibited bright tunable emission in the purple region and the red region. These results indicate that the Ca(PO3)2: Eu phosphors have potential applications as a n-UV convertible phosphor for light-emitting diodes.

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Eco-friendly synthesis of Eu3+, Sm3+, and Dy3+-doped monticellite-based ceramic powders: effects of rare-earth dopants and synthesis temperature

et al. 2023

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Synthesis and photoluminescence properties of the novel Eu3+-activated CaNa(PO3)3 phosphors

Cited by 4 publications

References 39 publications

Emission Enhancement of Eu³⁺ Ions in LiY(PO₃)₄ Phosphate Phosphors via Anionic SO₄ ²⁻ Substitution

Emission Enhancement of Eu³⁺ Ions in LiY(PO₃)₄ Phosphate Phosphors via Anionic SO₄ ²⁻ Substitution

Self-Reduction Mechanism and Luminescence Properties of Eu²⁺-Eu³⁺Doped Ca(PO₃)₂ Phosphor

Eco-friendly synthesis of Eu3+, Sm3+, and Dy3+-doped monticellite-based ceramic powders: effects of rare-earth dopants and synthesis temperature

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Synthesis and photoluminescence properties of the novel Eu3+-activated CaNa(PO3)3 phosphors

Cited by 4 publications

References 39 publications

Emission Enhancement of Eu3+ Ions in LiY(PO3)4 Phosphate Phosphors via Anionic SO4 2− Substitution

Emission Enhancement of Eu3+ Ions in LiY(PO3)4 Phosphate Phosphors via Anionic SO4 2− Substitution

Self-Reduction Mechanism and Luminescence Properties of Eu2+-Eu3+Doped Ca(PO3)2 Phosphor

Eco-friendly synthesis of Eu3+, Sm3+, and Dy3+-doped monticellite-based ceramic powders: effects of rare-earth dopants and synthesis temperature

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Emission Enhancement of Eu³⁺ Ions in LiY(PO₃)₄ Phosphate Phosphors via Anionic SO₄ ²⁻ Substitution

Emission Enhancement of Eu³⁺ Ions in LiY(PO₃)₄ Phosphate Phosphors via Anionic SO₄ ²⁻ Substitution

Self-Reduction Mechanism and Luminescence Properties of Eu²⁺-Eu³⁺Doped Ca(PO₃)₂ Phosphor