A reddish-orange emitting samarium doped α-Na3Y(VO4)2 nanocrystals for single phased UV excitable white light applications

Jacob, Lija; Sisira, S.; Thomas, Kukku; Alexander, Dinu; Biju, P.R.; Unnikrishnan, N.V.

doi:10.1016/j.jssc.2019.120998

Cited by 15 publications

(3 citation statements)

References 27 publications

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“…Vanadate, which is made up of a (VO 4 ) 3− tetrahedron, is a luminescent material essentially doped with non‐rare earth ions. It has good chemical stability, a broad emission spectrum, and high luminous efficiency [23, 24]. A 3 (VO 4 ) 2 (A = Mg, Sr, Ba) phosphors, for example, have broad emission bands between 400 and 700 nm and intense charge transfer (CT) absorption bands in the near‐UV region [25, 26].…”

Section: Introductionmentioning

confidence: 99%

Multi‐color luminescence of Sm³⁺‐doped Na₂YMg₂V₃O₁₂ phosphor potentially applicable in white‐LEDs

et al. 2023

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A novel multi‐color emitting Na2YMg2V3O12:Sm3+ phosphor was synthesized using a solid‐state reaction, and its crystal structure, luminescence properties, and thermal stability were studied. Charge transfer within the (VO4)3− groups in the Na2YMg2V3O12 host led to a broad emission band between 400 and 700 nm, with a maximum at 530 nm. The Na2Y1−xMg2V3O12:xSm3+ phosphors exhibited a multi‐color emission band under 365 nm near‐ultraviolet (near‐UV) light, consisting of the green emission of the (VO4)3− groups and sharp emission peaks at 570 nm (yellow), 618 nm (orange), 657 nm (red), and 714 nm (deep red) of Sm3+ ions. The optimal doping concentration of Sm3+ ions was found to be 0.05 mol%, and the dipole–dipole (d–d) interaction was primarily responsible for the concentration quenching phenomenon. Using the acquired Na2YMg2V3O12:Sm3+ phosphors, commercial BaMgAl10O17:Eu2+ blue phosphor, and a near‐UV light‐emitting diode (LED) chip, a white‐LED lamp was designed and packaged. It produced bright neutral white light, manifesting a CIE coordinate of (0.314, 0.373), a color rendering index (CRI) of 84.9, and a correlated color temperature (CCT) of 6377 K. These findings indicate the potential of Na2YMg2V3O12:Sm3+ phosphor to be used as a multi‐color component for solid‐state illumination.

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Section: Introductionmentioning

confidence: 99%

Multi‐color luminescence of Sm³⁺‐doped Na₂YMg₂V₃O₁₂ phosphor potentially applicable in white‐LEDs

et al. 2023

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“…Vanadates are regarded as an excellent luminescent host materials for RE ions that have been widely investigated for solid-state lighting, solar cells, and optical displays, because of their strong absorption in the near-ultraviolet (NUV) region and good intrinsic emissions originating from the electronic transitions of 3 T J − 1 A 1 ( J = 1, 2) in the VO 4 3− group. 22 Recently, several researches focused on the double vanadate doped with various lanthanides ions, such as Er 3+ , Na 3 Gd(VO 4 ) 2 :Ho 3+ /Yb 3+ , 23 Na 3 Y(VO 4 ) 2 :Sm 3+ , 24 Na 3 Y(VO 4 ) 2 :Tm 3+ , 25 K 3 Y(VO 4 ) 2 :Ln (Ln = Eu, Er, Sm, Ho, Tm). 26 …”

Section: Introductionmentioning

confidence: 99%

Synthesis and optical spectroscopy of Na₃Y(VO₄)₂:Eu³⁺ phosphors for thermometry and display applications

et al. 2022

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“…Vanadate, composed of VO 4 3− tetrahedral, constitutes an important phosphor host that shows a broadband emission band at 400-700 nm, high luminous efficiency and excellent chemical stability upon excitation by n-UV light. [17,18] Vanadate phosphors produce intense visible emissions corresponding to the V 5+ →O 2− charge transfer (CT) transition in the VO 4 3− tetrahedron [19]. In addition, rare earth ion-activated vanadate phosphors can give rise to visible emissions that can be tuned by the energy transfer between VO 4 3− and rare earth ions [20,21].…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Photoluminescence Properties of Eu3+-Doped Na2YMg2V3O12: A Novel Red-Emitting Phosphor for White-Light-Emitting Diodes

Zhang¹,

Shao²,

Zhu³

et al. 2021

Preprint

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The fabrication and luminescent properties of novel Na2YMg2V3O12:Eu3+ phosphors produced by conventional solid-state reactions were investigated. Self-activated emission of the Na2YMg2V3O12 host produces a broad emission band ranging from 400 to 700 nm with a maximum peak at 530 nm, ascribed to the charge transfer in the (VO4)3− groups. Excitation with near-UV (365 nm) light causes the Na2YMg2V3O12:Eu3+ phosphors to emit bright red light, including both the broad emission band of the (VO4)3− groups and the sharp emission peaks of Eu3+ ions. At a quenching concentration of 0.03 mol, the Eu3+ ion emission peaks were located at 597, 613, 654 and 710 nm. As-prepared Na2YMg2V3O12:Eu3+ phosphors also exhibited stable emission at high temperatures. Furthermore, a designed and packaged white-light-emitting diode (WLED) lamp, including the obtained phosphors, commercial (Ba,Sr)2SiO4:Eu2+ green phosphors, BaMgAl10O17:Eu2+ blue phosphors and a near-ultraviolet (n-UV) chip, emitted bright white light with a good chromaticity coordinate of (0.3068, 0.3491), a satisfactory colour rendering index of 88.20 and a properly correlated colour temperature of 4460.52 K. These results indicate the potential of this Na2YMg2V3O12:Eu3+ phosphor as a red-emitting phosphor for solid-state illumination.

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A reddish-orange emitting samarium doped α-Na3Y(VO4)2 nanocrystals for single phased UV excitable white light applications

Cited by 15 publications

References 27 publications

Multi‐color luminescence of Sm³⁺‐doped Na₂YMg₂V₃O₁₂ phosphor potentially applicable in white‐LEDs

Multi‐color luminescence of Sm³⁺‐doped Na₂YMg₂V₃O₁₂ phosphor potentially applicable in white‐LEDs

Synthesis and optical spectroscopy of Na₃Y(VO₄)₂:Eu³⁺ phosphors for thermometry and display applications

Synthesis and Photoluminescence Properties of Eu3+-Doped Na2YMg2V3O12: A Novel Red-Emitting Phosphor for White-Light-Emitting Diodes

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A reddish-orange emitting samarium doped α-Na3Y(VO4)2 nanocrystals for single phased UV excitable white light applications

Cited by 15 publications

References 27 publications

Multi‐color luminescence of Sm3+‐doped Na2YMg2V3O12 phosphor potentially applicable in white‐LEDs

Multi‐color luminescence of Sm3+‐doped Na2YMg2V3O12 phosphor potentially applicable in white‐LEDs

Synthesis and optical spectroscopy of Na3Y(VO4)2:Eu3+ phosphors for thermometry and display applications

Synthesis and Photoluminescence Properties of Eu3+-Doped Na2YMg2V3O12: A Novel Red-Emitting Phosphor for White-Light-Emitting Diodes

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Multi‐color luminescence of Sm³⁺‐doped Na₂YMg₂V₃O₁₂ phosphor potentially applicable in white‐LEDs

Multi‐color luminescence of Sm³⁺‐doped Na₂YMg₂V₃O₁₂ phosphor potentially applicable in white‐LEDs

Synthesis and optical spectroscopy of Na₃Y(VO₄)₂:Eu³⁺ phosphors for thermometry and display applications