Photoluminescence properties of Eu3+ in Y(PO3)3 under VUV excitation

Wang, Dan; Wang, Yuhua; Shi, Yurong

doi:10.1016/j.jlumin.2011.02.032

Cited by 15 publications

(6 citation statements)

References 19 publications

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“…and Tb 3 þ in La(PO 3 ) 3 and Y(PO 3 ) 3 as potential phosphors under VUV excitation have been discussed [2,7,8]. Much attention has been paid to the energy migration and transfer processes in Ln-based phosphate compounds [9][10][11].…”

Section: Introductionmentioning

confidence: 99%

“…Ln(PO 3 ) 3 (Ln¼La to Lu and Y) is one of the complex phosphates, which can adopt two different crystal structures depending on the ionic radius of the Ln ion. Ln(PO 3 ) 3 (Ln¼ La to Gd) with a large radius of the Ln ion crystallizes in an orthorhombic structure with C222 1 space group, while those with small radius of Ln ion (Ln¼Gd to Lu and Y) crystallize in the monoclinic crystal structure with P2 1 /c space group [12,13]. Recently, it was shown that the coordination environment of cationic sites can influence the luminescent properties of lanthanide ions in the two Ln(PO 3 ) 3 phosphate structures [8,12].…”

Section: Introductionmentioning

confidence: 99%

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Luminescence spectroscopy and energy level location of lanthanide ions doped in La(PO3)3

Shalapska

Dorenbos

Gektin

et al. 2014

Journal of Luminescence

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a b s t r a c tThe luminescence properties of Cewere studied by vacuum ultra-violet spectroscopy at 10 K which gives information on the energies of 4f-5d excitation and emission and charge transfer bands of the dopants. All data are consistent with available models and have been used to construct the vacuum referred binding energy scheme for all trivalent and all divalent lanthanides in La(PO 3 ) 3 phosphate.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Luminescence spectroscopy and energy level location of lanthanide ions doped in La(PO3)3

Shalapska

Dorenbos

Gektin

et al. 2014

Journal of Luminescence

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“…phosphors where the distance between the embedded RE is large enough for avoiding the discriminable distance leading to the most common non-radiative pathway. On the other hand, the phosphates have an effective absorption and emission properties under VUV-UV excitation when they are activated by RE ions, notably by Eu 3+ [2] and may be applied as phosphor for mercury-free fluorescent lamps or in plasma display panels (PDP).…”

mentioning

confidence: 99%

Synthesis and photoluminescence of Eu3+ activated alkali mixed (Li, Na)Y(PO3)4 under VUV-UV excitation

Sebai¹,

Zambón²,

Watras³

et al. 2019

Optical Materials

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One important strategy to further enhance the VUV absorption lies in broadening the light absorption in this VUV wavelength region. The mixing of phosphors is a common solution in the case of obtaining a desired color in the case of WLED. However, the VUV region is very sensitive for the considered materials for such purpose, since the deep penetration is very weak and is very affected by the surface of the grains constituting the phosphor (grain size, morphology) [1]. Consequently the collected fluorescence under VUV excitation is not really representative of the mixture of phosphors when this solution is needed. For this reason, we have explored the possibility to develop strategy where the broadening of the VUV absorption can be reached by one pot synthesis since tunability of the band gap can be allowed simply by modifying the alkali ions in the case of phosphates. Adjusting the ratio between mixed alkali ions in the same material is a promising solution.The luminescence of mixed alkali rare earth cyclo-or poly-phosphates with respective formulas MREP 4 O 12 or MRE(PO 3 ) 4 (M = alkali and RE = rare earth ions) has attracted much attention during the last decades. These compounds are characterized by relatively large cyclic anions or long chains built up by PO 4 3−3tetrahedral connected from each other by at least one or two corners. Such structures are favorable for designing rare-earth (RE)-based

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“…Blue emitting phosphors combined with a red and green emitting phosphors to produce white light is the most commonly adopted method for white LED applications due to higher luminous efficiency and lower fabrication cost [1][2][3][4][5]. Phosphate-based phosphors have attracted much attention in recent years as they have excellent thermal stability and good charge stability due to rigid tetrahedral threedimensional matrix of phosphate [6][7][8][9]. In particular, Eu 2+ -doped pyrophosphates belonging to the A 2 P 2 O 7 and ABP 2 O 7 families (where A and B are divalent cations) are one class of desirable blue phosphors as they possess a few interesting characteristics such as high luminescence efficiency upon blue or near-UV LED excitation, good thermal and chemical stability [9][10][11][12][13][14][15][16][17].…”

Section: Introductionmentioning

confidence: 99%

Solid state synthesis and luminescent properties of bright blue-emitting Ba2P2O7:Eu2+ phosphor

Derbel

Mbarek

2020

SN Appl. Sci.

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Eu 2+ -activated Ba 2 P 2 O 7 pyrophosphates were successfully synthesized by the solid-state reaction under reduced atmosphere and were characterized by X-ray diffraction (XRD) and Nuclear magnetic resonance and infrared (IR)/Raman spectroscopy. The luminescence properties of Ba 2−x P 2 O 7 : xEu 2+ (x = 0.01, 0.05) phosphors were investigated in ultraviolet (UV) and vacuum ultraviolet (VUV) regions. Under 131 or 320 nm excitation, the phosphors exhibit a blue emitting band ranging from 350 to 500 nm, which is provided corresponding to the 5d-4f transition of Eu 2+ . The as-synthesized phosphors present good thermal luminescence stability on temperature quenching and high color purity with the CIE coordinate (0.172, 0.031) for Ba 2 P 2 O 7 :1%Eu 2+ phosphor. These results suggest that the Ba 2 P 2 O 7 :Eu 2+ pyrophosphate might be a promising blue-emitting phosphor for near ultraviolet (n-UV) light-emitting diodes (LEDs).

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Photoluminescence properties of Eu3+ in Y(PO3)3 under VUV excitation

Cited by 15 publications

References 19 publications

Luminescence spectroscopy and energy level location of lanthanide ions doped in La(PO3)3

Luminescence spectroscopy and energy level location of lanthanide ions doped in La(PO3)3

Synthesis and photoluminescence of Eu3+ activated alkali mixed (Li, Na)Y(PO3)4 under VUV-UV excitation

Solid state synthesis and luminescent properties of bright blue-emitting Ba2P2O7:Eu2+ phosphor

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