Characterization and luminescence properties of Gd2O3 phosphor

Tamrakar, Raunak Kumar; Bisen, D. P.; Brahme, Nameeta

doi:10.1007/s11164-013-1080-9

Cited by 75 publications

(48 citation statements)

References 15 publications

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“…1) [13]. The crystallite size was calculated by the diffraction pattern from the Scherer equation [14,23,24]: where k = 0.89 is a constant, d is the crystallite size for the (h k ) plane, λ is the wavelength of the incident X-radiation (CuK␣ = 0.154 nm), β is the full width at half-maximum in radians, and θ is the diffraction angle for the (h k ) indices. The powder X-ray diffraction pattern showed that the main phase formed is pure Y 2 O 3 .…”

Section: Resultsmentioning

confidence: 99%

Synthesis, structural characterization and thermoluminescence glow curve study of gadolinium-doped Y₂O₃nanophosphor

Tamrakar

Dubey

2016

Journal of Taibah University for Science

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Gadolinium-doped Y 2 O 3 nanophosphor was synthesized by a solid-state reaction method, which could be used for large-scale production of phosphors. The structure of the phosphor sample was characterized by powder X-ray diffraction, field emission gun scanning electron microscopy and high-resolution transmission electron microscopy. The particle size was calculated from Scherer's formula. X-ray diffraction showed a grain size of 35-55 nm, in good agreement with the scanning electron microscopy image. The synthesized sample showed good morphology and connectivity, with grains and formation of a nano-sized prepared sample. The diffraction pattern was measured by transmission electron microscopy with a selected area diffraction pattern. The prepared phosphor was also examined by thermoluminescence; to record the glow curve, 1 mg phosphor was irradiated with ultraviolet at 254 nm at a fixed heating rate of 7 • C s −1 . The sample showed a well-resolved peak at 99 • C for 1 mol% of Gd 3+ . A lower temperature peak showed less stability and more fading of the prepared sample. A thermoluminescence glow curve gives information about trapping parameters such as activation energy and trap depth, order of kinetics and frequency. All the kinetics were calculated by the peak shape method.

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Section: Resultsmentioning

confidence: 99%

Synthesis, structural characterization and thermoluminescence glow curve study of gadolinium-doped Y₂O₃nanophosphor

Tamrakar

Dubey

2016

Journal of Taibah University for Science

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“…Therefore, no size-dependent quantization effect is found in these transitions. However, confinement effects may be induced by inter-ionic electronic interaction and particularly, through electron-phonon interaction which has important manifestations in influencing the optical properties [5,6].…”

Section: Introductionmentioning

confidence: 99%

Upconversion and colour tunability of Gd2O3:Er3+ phosphor prepared by combustion synthesis method

Tamrakar

Bisen

Upadhyay³

et al. 2016

Journal of Alloys and Compounds

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“…The precursor materials were weighed in stoichiometric ratio and grounded by using mortar and pestle. The mixture were transferred into alumina crucible and placed in a muffle furnace followed by heating at 1200 C for 3 h (Tamrakar, Bisen, & Brahme, 2014a, 2014cTamrakar, Bisen, Robinson, Sahu & Brahme, 2014;Tamrakar, Bisen, Upadhyay & Brahme, 2014;.…”

Section: Introductionmentioning

confidence: 99%

Photoluminescence behavior of ZrO2: Eu3+ with variable concentration of Eu3+ doped phosphor

Tamrakar

Bisen

Upadhyay³

2015

Journal of Radiation Research and Applied Sciences

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PhotoluminescenceScanning electron microscope CIE a b s t r a c tThe ZrO 2 phosphor doped with Eu 3þ was synthesized by solid state reaction method which is suitable for large scale production, and high temperature synthesis method.The prepared nanoparticles of ZrO 2 phosphor was characterized by X-ray diffraction technique (XRD) for Structural analysis and field emission gun scanning electron microscopy (FEGSEM)) for morphological details. The optical behavior of the prepared phosphor was determined by photoluminescence (PL) spectra recorded in room temperature. The PL excitation spectra was found at 311 nm range and the emission spectra in the range of 400e650 nm.

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Characterization and luminescence properties of Gd2O3 phosphor

Cited by 75 publications

References 15 publications

Synthesis, structural characterization and thermoluminescence glow curve study of gadolinium-doped Y₂O₃nanophosphor

Synthesis, structural characterization and thermoluminescence glow curve study of gadolinium-doped Y₂O₃nanophosphor

Upconversion and colour tunability of Gd2O3:Er3+ phosphor prepared by combustion synthesis method

Photoluminescence behavior of ZrO2: Eu3+ with variable concentration of Eu3+ doped phosphor

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Characterization and luminescence properties of Gd2O3 phosphor

Cited by 75 publications

References 15 publications

Synthesis, structural characterization and thermoluminescence glow curve study of gadolinium-doped Y2O3nanophosphor

Synthesis, structural characterization and thermoluminescence glow curve study of gadolinium-doped Y2O3nanophosphor

Upconversion and colour tunability of Gd2O3:Er3+ phosphor prepared by combustion synthesis method

Photoluminescence behavior of ZrO2: Eu3+ with variable concentration of Eu3+ doped phosphor

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Synthesis, structural characterization and thermoluminescence glow curve study of gadolinium-doped Y₂O₃nanophosphor

Synthesis, structural characterization and thermoluminescence glow curve study of gadolinium-doped Y₂O₃nanophosphor