Effect of various cerium ion percentages on photoluminescence and themoluminescence study of CaY2O4 phosphor

Dubey, Vikas; Tiwari, Ratnesh; Shrivastava, Ravi; Markande, Chandrabhushan; Verma, Omprakash; Saluja, Jagjeet Kaur; Parganiha, Yogita; Murthy, K. V. R.

doi:10.1109/jdt.2015.2488359

Cited by 5 publications

(3 citation statements)

References 43 publications

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“…4ab shows the FT-IR spectra of 3 and 7 mol % cerium doped Y 2 SiO 5 , respectively. The bands at 510, 447 and 413 cm -1 are ascribed to Si-O-Si vibrational bending modes [27], while the band at 552 cm -1 is attributed to the presence of Y-O bonds. The weak bands at 714 and 686 cm -1 indicate the presence of O-Ce-O bonds vibrations.…”

Section: Ft-ir Analysismentioning

confidence: 99%

Photoluminescence and γ-Ray Induced Thermoluminescence Investigation of Phase Pure Cerium Doped Yttrium Silicate Nanophosphors

Dhanalakshmi

Reddy

Parashuram³

2019

Asian J. Chem.

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Y2SiO5:Ce3+ (1-7 mol %) nanophosphors were prepared by solution combustion method using oxalyldihydrazide fuel. The phosphors were characterized by X-ray diffraction, scanning electron microscopy, UV-visible and Fourier transform infrared spectroscopy. The XRD patterns confirm the monoclinic structure of the prepared phosphors, with crystallite size of 66-74 nm. The surface morphology and elemental composition were evaluated by SEM and energy dispersive X-ray analysis. The optical band gap was calculated and is between 4.66 eV – 4.9 eV. The presence of Si-O-Si and Y-O bonds was confirmed by the FTIR spectra. Effect of cerium concentration on photoluminescence and thermoluminescence intensity were interpreted. The photoluminescence emission spectrum was recorded under excitation wavelength of 370 nm, the emission spectra showed three significant peaks positioned at 418 nm, 459 nm and 485 nm, which are ascribed to electronic transitions between 5d-4f levels. The nature and activity of trap centers were evaluated from the parameters obtained from Chen′s peak shape method. The intense blue emission by phosphor makes it a competent material for blue emission display devices. Also, its thermoluminescence properties make it a good material for dosimetric applications.

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Section: Ft-ir Analysismentioning

confidence: 99%

Photoluminescence and γ-Ray Induced Thermoluminescence Investigation of Phase Pure Cerium Doped Yttrium Silicate Nanophosphors

Dhanalakshmi

Reddy

Parashuram³

2019

Asian J. Chem.

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“…Among them sesquioxides (RE 2 O 3 , RE = rare earth) were investigated the most, but along with them there is another significant group of oxides with the formula ARE 2 O 4 (A= Ca, Ba, Sr). This group of materials possesses excellent photoluminescence and magnetic properties which makes them very interesting for research [18,19].…”

Section: Introductionmentioning

confidence: 99%

Effect of Eu3+ - dopant concentration on structural and luminescence properties of SrY2O4 nanocrystalline phosphor and potential application in dye-sensitized solar cells

Lojpur¹,

Stojadinović

Mitrić³

2018

SCI SINTER

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SrY 2 O 4 phosphors were doped with different concentrations of Eu 3+ (0.5, 1, 2, 4, 8 and 10 at %) in order to investigate the maximal doping concentration of Eu 3+ and its implementation in solar cell devices. Samples were synthesized by a combustion method using citric acid and glycine as a fuel. The X-ray diffraction (XRD) patterns confirmed pure phase of SrY 2 O 4. FE-SEM micrographs showed agglomerate phenomenon with spherical-like shape particles and diameter of about 50 nm. Upon excitation with 280 nm, emission spectra were recorded in the range from 450-750 nm and in all samples the same energy transitions were observed 5 D 0 → 7 F J (J = 1, 2, 3 and 4) with maximal intensity for sample with 8 at % of Eu 3+. That sample was further examined for the purpose of application in solar cell devices and showed high value of efficiency at low light intensities.

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“…Y 3+ occupies two nonequivalent sites C s symmetry, where one Y(1) site is nearly a regular octahedron but the other Y(2) one is much distorted. 32 Since it has been reported that high calcination temperature is necessary for the synthesis of SrY 2 O 4 by a solid-state reaction, 33,34 SrY 2Àx Ce x O 4 (0 # x # 1.2) pigments were synthesized using a citrate sol-gel method. The optical and colour properties of the samples were evaluated as novel environmentally friendly inorganic reddish-brown pigments.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and characterisation of SrY_2−xCe_xO₄ as environmentally friendly reddish-brown pigments

et al. 2017

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Effect of various cerium ion percentages on photoluminescence and themoluminescence study of CaY2O4 phosphor

Cited by 5 publications

References 43 publications

Photoluminescence and γ-Ray Induced Thermoluminescence Investigation of Phase Pure Cerium Doped Yttrium Silicate Nanophosphors

Photoluminescence and γ-Ray Induced Thermoluminescence Investigation of Phase Pure Cerium Doped Yttrium Silicate Nanophosphors

Effect of Eu3+ - dopant concentration on structural and luminescence properties of SrY2O4 nanocrystalline phosphor and potential application in dye-sensitized solar cells

Synthesis and characterisation of SrY_2−xCe_xO₄ as environmentally friendly reddish-brown pigments

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Effect of various cerium ion percentages on photoluminescence and themoluminescence study of CaY2O4 phosphor

Cited by 5 publications

References 43 publications

Photoluminescence and γ-Ray Induced Thermoluminescence Investigation of Phase Pure Cerium Doped Yttrium Silicate Nanophosphors

Photoluminescence and γ-Ray Induced Thermoluminescence Investigation of Phase Pure Cerium Doped Yttrium Silicate Nanophosphors

Effect of Eu3+ - dopant concentration on structural and luminescence properties of SrY2O4 nanocrystalline phosphor and potential application in dye-sensitized solar cells

Synthesis and characterisation of SrY2−xCexO4 as environmentally friendly reddish-brown pigments

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Synthesis and characterisation of SrY_2−xCe_xO₄ as environmentally friendly reddish-brown pigments