Combustion synthesis and photoluminescence of nanocrystalline Y2O3:Eu phosphors

Ye, Tao; Zhao, Genping; Zhang, Weiping; Xia, Shuang

doi:10.1016/s0025-5408(97)00007-x

Cited by 346 publications

(89 citation statements)

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“…It is a suitable material for photonic waveguide due to its high band gap (5.72 eV), with a very high refractive index (~2) and a wide transmission range (280-8000 nm) [14]. Numerous techniques are applied on the synthesis of rare earth doped nanocrystalline Y 2 O 3 [15][16][17][18].…”

Section: Introductionmentioning

confidence: 99%

Thermoluminescence of combustion synthesized yttrium oxide

2012

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Pure yttrium oxide (Y 2 O 3 ) was prepared by solution combustion technique using disodium ethylene diamine tetra acetic acid (EDTA-Na 2 ) as fuel at~350°C. Powder X-ray diffraction (PXRD) pattern of Y 2 O 3 revealed cubic crystalline structure with crystallite size in the range of 18-23 nm. The scanning electron microscopy (SEM) indicated the foamy and fluffy nature of the sample. Fourier transformed infrared spectroscopy (FTIR) revealed four prominent absorption with peaks at 3395, 1433, 875 and 566 cm − 1 . From the optical absorption studies the energy gap of the synthesized sample was found to be 5.72 eV. Two well resolved thermoluminescence (TL) glows with peaks at 475 and 626 K were observed in γ-irradiated Y 2 O 3 . The glow curves were analyzed and the average activation energy was found to be 0.505 and 0.977 eV respectively.

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Section: Introductionmentioning

confidence: 99%

Thermoluminescence of combustion synthesized yttrium oxide

2012

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“…Even though it has been shown that microstructural parameters such as size and surface of the nanocrystals, level of agglomeration, activator concentration and presence of defects are responsible for the luminescence efficiency of the nanocrystalline phosphors [13,14,18,[30][31][32][33], only a few detailed structural characterizations have been reported [17,22,23,34,35]. In our previous work [36] we studied a series of GGG samples, obtained via solution combustion synthesis, doped with different lanthanide ions (Tm, Er, Ho, Eu, Sm, Nd, Pr) and with different concentrations (1, 5, 10 mol%).…”

Section: Introductionmentioning

confidence: 99%

Structural and luminescence investigation on gadolinium gallium garnet nanocrystalline powders prepared by solution combustion synthesis

et al. 2007

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Nanocrystalline powders of undoped and lanthanide (Pr 3+ , Tm 3+ )-doped gadolinium gallium garnet, Gd 3 Ga 5 O 12 (GGG), were prepared by propellant synthesis and studied by x-ray powder diffraction (XRD), electron diffraction (ED), high-resolution electron microscopy (HREM) and luminescence spectroscopy. The x-ray diffraction patterns of the GGG samples were analysed using the Rietveld method. The Rietveld refinement reveals the existence of two garnet-type phases: both are cubic (space group I a3d) with a slightly different lattice parameter and probably a slightly different composition. Electron diffraction and electron microscopy measurements confirm the x-ray diffraction results. EDX measurements for lanthanide-doped samples show that stable solid solutions with composition Gd 3−x Ln x Ga 5 O 12 , x ≈ 0.3 (Ln = Pr; Tm) have been obtained. The luminescence properties of the Tm 3+ -doped nanocrystalline GGG samples were measured and analysed.

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“…Yttrium oxide is one of the seventeen rare earth oxides which is a super refractory oxide that nds use in a variety of applications including optics, display devices, X-ray imaging, core-shell materials and also as additive for liquid phase sintering of ceramics [5,6]. Nanocrystalline Y 2 O 3 has been widely investigated, due to its interesting applications in the eld of phosphors for lighting and for cathode ray tube [7,8]. The surface of nanoparticles can be changed either by chemical reactions or by dispersing the particles in a polymer or glass matrix.…”

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confidence: 99%

“…Some authors have represented the use of silica for coating [9] or as a dispersing medium [10] by impregnation, for doped yttrium nanoparticles. Nanocrystalline Y 2 O 3 has already been synthesized by various methods such as hydrothermal [11], combustion synthesis [12], and co-precipitation [13] techniques.…”

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confidence: 99%

Influence of Annealing Temperature on Y_2O_3:SiO_2 Nanocomposite Prepared by Sol-Gel Process

Ahlawat

Aghamkar

2014

Acta Phys. Pol. A

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Oxide nanoparticles embedded in a polymer matrix produce nanocomposites which are useful for optics and electronic applications. Yttrium oxide nanoparticles have received much attention due to their various properties and are signicantly used in fundamental and application oriented elds. The present paper reports the inuence of annealing temperature on the Y2O3:SiO2 nanocomposite prepared by solgel process. Y(NO3)3·4H2O and tetraethoxysilane were used as precursors and obtained powdered form of Y2O3:SiO2 composite. The powder sample was annealed at 500• C and 900• C for 6 h which were characterized by X-ray diraction, Fourier transform infrared and transmission electron microscope. X-ray diraction data described that the broadening of peaks decreases with increase in annealing temperature which may be due to the increase in particle size. Sample analyzed by Fourier transform infrared and transmission electron microscopy conrmed the grain size dependence on annealing temperature. Cubic phase of yttrium oxide crystal structure was obtained within the silica matrix. The nanocrystallites size has been calculated using DebyeScherrer formula, WilliamsonHall plot and transmission electron micrographs and compared at two dierent temperatures (a) 500• C and (b) 900• C.

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Combustion synthesis and photoluminescence of nanocrystalline Y2O3:Eu phosphors

Cited by 346 publications

References 10 publications

Thermoluminescence of combustion synthesized yttrium oxide

Thermoluminescence of combustion synthesized yttrium oxide

Structural and luminescence investigation on gadolinium gallium garnet nanocrystalline powders prepared by solution combustion synthesis

Influence of Annealing Temperature on Y_2O_3:SiO_2 Nanocomposite Prepared by Sol-Gel Process

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