Enhanced red emission on co-doping of divalent ions (M2+=Ca2+, Sr2+, Ba2+) in YVO4:Eu3+ phosphor and spectroscopic analysis for its application in display devices

Kumari, Puja; Manam, J.

doi:10.1016/j.saa.2015.07.039

Cited by 69 publications

(13 citation statements)

References 45 publications

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“…Until now, quite few phosphors' studies have been published on this compound in spite of the potential interest in many applications [17]. The conventional solid-state reaction is the most commonly used method for multicomponent phosphor powders synthesis with the advantage of its simplicity [24][25][26][27]. The starting materials used as received without further purification in the synthesis were K 2 CO 3 (A.R.…”

Section: Preparationmentioning

confidence: 99%

Synthesis, photoluminescence and theoretical explanations of trivalent europium-doped dipotassium tungstate phosphors

Feng

Qin

2017

Optik

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Novel red-emitting europium-doped potassium tungstate phosphor has been successfully prepared through a solid-state reaction method. The phosphor exhibits sheet and polyporous morphology. The trivalent europium-doped potassium tungstate phosphor has the excellent red-emitting property due to the characteristic transitions of trivalent europium from 5 D 0 to 7 F j. The critical concentration and critical distance are found to be about 2 mol% and 23.07 Å, respectively. The average CIE chromaticity coordinate of the europium-doped potassium tungstate phosphor upon 393 and 464 nm excitation is (0.64, 0.36), located in the red region. The luminescence decay time of the typical sample is 257 μs. Moreover, the photoluminescent excitation and emission spectra for europium ion at the potassium site of potassium tungstate crystal are well explained from a full energy matrix. All the results indicate that the europium-doped potassium tungstate phosphor is a potential red-emitting phosphor for near ultraviolet or blue light pumped light-emitting diodes.

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Section: Preparationmentioning

confidence: 99%

Synthesis, photoluminescence and theoretical explanations of trivalent europium-doped dipotassium tungstate phosphors

Feng

Qin

2017

Optik

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“…According to J-O theory, the magnetic dipole transition 5 D 0 → 7 F 1 is independent of host environment. This can be used as a reference and hence, rate of magnetic dipole transition is represented by the equation [43,44] A 0 →1 = 64π 4 e 2 (ν 0 → 1 ) 3 3h(2J + 1)…”

Section: Radiative Propertiesmentioning

confidence: 99%

Luminescence properties of ZnO/TiO 2 nanocomposite activated by Eu 3 + and their spectroscopic analysis

Baitha

Manam

2016

Bull Mater Sci

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A new type of novel orange-red emitting Eu-doped ZnO/TiO 2 nanocomposite phosphors have been synthesized by simple low temperature co-precipitation route. Structure and morphology of the prepared sample have been investigated using X-ray diffraction and field emission scanning electron microscopy (FESEM) techniques. XRD pattern confirmed the presence of both phases of ZnO and TiO 2 simultaneously. The luminescence properties, such as photoluminescence (PL) excitation and emission spectra, Judd-Ofelt parameters, CIE colour coordinates and the dependence of luminescence intensity on the doping level were investigated. The luminescence spectrum characteristics of Eu 3+ ions have a strong dependence on Eu 3+ doping levels as well as ZnO/TiO 2 ratio variations. The photoluminescence results indicate that these phosphors could be efficiently excited by near-ultraviolet radiation, which causes emissions in orange-red regions.

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“…Recently, many researchers have been interested in red phosphors doped with rare-earth ions which have plentiful emitting spectra and excellent luminescence properties due to their electron structure with partially filled 4f shells [19][20][21][22][23]. Among these ions, Eu 3+ ions have attracted a wide research interest because of their special luminescence characteristics.…”

Section: Introductionmentioning

confidence: 99%

Influence of Bi³⁺content on photoluminescence of InNbO₄:Eu³⁺,Bi³⁺for white light-emitting diodes

Tang

Shao

et al. 2017

Materials Science-Poland

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A series of red-emitting phosphors InNbO 4 :Eu 3+ ,Bi 3+ was prepared by a high temperature solid-state reaction. The structure, size distribution and luminescence properties of the phosphors were respectively characterized by X-ray diffraction (XRD), laser particle size and molecular fluorescence spectrometer. The XRD results indicate that the phase-pure samples have been obtained and the crystal structure of the host has not changed under the Eu 3+ and Bi 3+ co-doping. The test of size distribution shows that the phosphor has a normal size distribution. The excitation spectra illustrate that the dominant sharp peaks are located at 394 nm ( 7 F 0 → 5 L 6 ) and 466 nm ( 7 F 0 → 5 D 2 ). Meanwhile, the emission spectra reveal that the phosphors excited by the wavelength of 394 nm or 466 nm have an intense red-emission line at 612 nm owing to the 5 D 0 → 7 F 2 transition of Eu 3+ . Bi 3+ doping has not changed the peak positions except the photoluminescence intensity. The emission intensity is related to Bi 3+ concentration, and it is up to the maximum when the Bi 3+ -doping concentration is 4 mol%. Due to good photoluminescence properties of the phosphor, the InNbO 4 :0.04Eu 3+ ,0.04Bi 3+ may be used as a red component for white light-emitting diodes.

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Enhanced red emission on co-doping of divalent ions (M2+=Ca2+, Sr2+, Ba2+) in YVO4:Eu3+ phosphor and spectroscopic analysis for its application in display devices

Cited by 69 publications

References 45 publications

Synthesis, photoluminescence and theoretical explanations of trivalent europium-doped dipotassium tungstate phosphors

Synthesis, photoluminescence and theoretical explanations of trivalent europium-doped dipotassium tungstate phosphors

Luminescence properties of ZnO/TiO 2 nanocomposite activated by Eu 3 + and their spectroscopic analysis

Influence of Bi³⁺content on photoluminescence of InNbO₄:Eu³⁺,Bi³⁺for white light-emitting diodes

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Enhanced red emission on co-doping of divalent ions (M2+=Ca2+, Sr2+, Ba2+) in YVO4:Eu3+ phosphor and spectroscopic analysis for its application in display devices

Cited by 69 publications

References 45 publications

Synthesis, photoluminescence and theoretical explanations of trivalent europium-doped dipotassium tungstate phosphors

Synthesis, photoluminescence and theoretical explanations of trivalent europium-doped dipotassium tungstate phosphors

Luminescence properties of ZnO/TiO 2 nanocomposite activated by Eu 3 + and their spectroscopic analysis

Influence of Bi3+content on photoluminescence of InNbO4:Eu3+,Bi3+for white light-emitting diodes

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Influence of Bi³⁺content on photoluminescence of InNbO₄:Eu³⁺,Bi³⁺for white light-emitting diodes