Facile synthesis and luminescence properties of octahedral YVO4:Eu3+ microcrystals

Jia, Guang; Song, Yanhua; Yang, Mei; Li, Kai; Zheng, Yuhua; You, Hongpeng

doi:10.1016/j.jcrysgro.2009.07.009

Cited by 22 publications

(12 citation statements)

References 44 publications

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“…Typical cathodoluminescence spectra of Sr0.95Eu0.05Si2O 2−ı N 2+2/3ı (a) and Ba0.95Eu0.05Si2O 2−ı N 2+2/3ı (b) (accelerating voltage: 3 kV; filament current: 90 mA). incident electrons, resulting in more populations of the excited Eu 2+ ions and higher CL intensity [25].…”

Section: Cathodoluminescent Propertiesmentioning

confidence: 99%

MSi2O2−δN2+2/3δ:Eu (M=Sr, Ba) phosphors for field emission displays

Song

Zou

et al. 2012

Journal of Alloys and Compounds

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Section: Cathodoluminescent Propertiesmentioning

confidence: 99%

MSi2O2−δN2+2/3δ:Eu (M=Sr, Ba) phosphors for field emission displays

Song

Zou

et al. 2012

Journal of Alloys and Compounds

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“…The absorption intensity of the general f–f transitions of Eu 3+ ions in the longer wavelength region are very weak compared with the VO 4 3− group, indicating that excitation of the Eu 3+ ions is mainly via VO 4 3− groups, i.e. via energy transfer from the VO 4 3− group to Eu 3+ ions . It can be seen from the intensity profile of VO 4 3 that the CT absorption band with the substitution of Y to Gd sites, initially decreased and then increased gradually with Y concentration, where Y 0.95 VO 4 :Eu 3+ 0.05 shows strong absorption compared with others.…”

Section: Resultsmentioning

confidence: 98%

A promising RVO₄:Eu³⁺,Li⁺@SiO₂ (R = Gd, Y and Gd/Y) red‐emitting phosphor with improved luminescence (cd/m²) and colour purity for optical display applications

Rambabu

Munirathnam

Reddy³

et al. 2015

Luminescence

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Red emission intensity was optimized in three stages, by investigating the effects of: (i) host composition (Gd, Y and Gd/Y), (ii) codoping Li(+) as a sensitizer and, finally, (iii) with a SiO2 shell coating as a protecting layer. Lanthanide vanadate powder phosphors were synthesized using a modified colloidal precipitation technique. The effects of SiO2 coating on phosphor particles were characterized using scanning electron microscopy (SEM)-EDAX, transmission electron microscopy (TEM), Fourier transform infrared (FTIR) and photoluminescence (PL) measurements. An improvement in the PL intensity on Li codoping was due to improved crystallinity, which led to higher oscillating strengths for the optical transitions, and also a lowering of the inversion symmetry of Eu(3+) ions. Red emission intensity due to (5)D0 → (5)D2 transition of the phosphor Y0.94VO4:Eu(3+)0.05, Li(+)0.01 was enhanced by 22.28% compared with Y0.95VO4:Eu(3+)0.05, and was further improved by 58.73% with SiO2 coating. The luminescence intensity (I) and colour coordinates (x, y) of the optimized phosphor Y0.94VO4:Eu(3+)0.05, Li(+)0.01@SiO2, where I = 13.07 cd/m(2) and (x = 0.6721, y = 0.3240), were compared with values for a commercial red phosphor (Y2O2S:Eu(3+)), where I = 27 cd/m(2) and (x = 0.6522, y = 0.3437). The measured colour coordinates are superior to those of the commercial red phosphor, and moreover, match well with standard NTSC values (x = 0.67, y = 0.33).

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“…8(ii)(a-e) were monitored with the excitation wavelength, l exc = 328 nm. The spectra consists of sharp peaks associated with the transitions from the excited 5 D 0 level to the ground states of 7 F j (where j = 1, 2, 3 and 4) of dopant Eu 3+ ions [11,19,22,26,27]. Of which, the major emissions centered at 591 nm ( 5 D 0 !…”

Section: Resultsmentioning

confidence: 99%

“…So, SiO 2 coating will appreciably improve the luminescence properties of the selected phosphors. Even though there is enough data available on the luminescence properties of various vanadate phosphors [26][27][28][29][30] For the synthesis of the proposed Eu 3+ doped vanadate phosphors, a modified colloidal precipitation technique followed by calcination was adopted. Based on our previous reports [31], the dopant Eu 3+ concentration was fixed as 5 mol%.…”

Section: Introductionmentioning

confidence: 99%

Enhanced luminescence intensity and color purity of the red emitting LnVO4:Eu3+@ SiO2 (Ln=Gd, Y and Gd/Y) powder phosphors

Rambabu

Han

2013

Materials Research Bulletin

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Facile synthesis and luminescence properties of octahedral YVO4:Eu3+ microcrystals

Cited by 22 publications

References 44 publications

MSi2O2−δN2+2/3δ:Eu (M=Sr, Ba) phosphors for field emission displays

MSi2O2−δN2+2/3δ:Eu (M=Sr, Ba) phosphors for field emission displays

A promising RVO₄:Eu³⁺,Li⁺@SiO₂ (R = Gd, Y and Gd/Y) red‐emitting phosphor with improved luminescence (cd/m²) and colour purity for optical display applications

Enhanced luminescence intensity and color purity of the red emitting LnVO4:Eu3+@ SiO2 (Ln=Gd, Y and Gd/Y) powder phosphors

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Facile synthesis and luminescence properties of octahedral YVO4:Eu3+ microcrystals

Cited by 22 publications

References 44 publications

MSi2O2−δN2+2/3δ:Eu (M=Sr, Ba) phosphors for field emission displays

MSi2O2−δN2+2/3δ:Eu (M=Sr, Ba) phosphors for field emission displays

A promising RVO4:Eu3+,Li+@SiO2 (R = Gd, Y and Gd/Y) red‐emitting phosphor with improved luminescence (cd/m2) and colour purity for optical display applications

Enhanced luminescence intensity and color purity of the red emitting LnVO4:Eu3+@ SiO2 (Ln=Gd, Y and Gd/Y) powder phosphors

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A promising RVO₄:Eu³⁺,Li⁺@SiO₂ (R = Gd, Y and Gd/Y) red‐emitting phosphor with improved luminescence (cd/m²) and colour purity for optical display applications