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• W2004665570 endingPage "2029" @default.
• W2004665570 startingPage "2023" @default.
• W2004665570 abstract "Eu3+ doped Y2O3 nanophosphors have been synthesized using the simple colloidal precipitation method. Doping of Eu3+ ions in host yttria lattice has been achieved through slow re-crystallization process under wet-chemical conditions followed by annealing at high temperatures (300–1400 °C). The nanophosphors were characterized by using powder X-ray diffraction (XRD), thermogravimetric analysis (TGA), atomic force microscopy (AFM) and spectrofluorometer techniques. XRD analysis reveals formation of pure cubic phase of Y2O3 in samples annealed at 700 °C or above. Further, the XRD data was successfully used to retrieve the crystallite size and size distribution from powder samples using the FW((1/5)/(4/5))M method. Crystallite size (11–50 nm) extracted from XRD has been found to be consistent with AFM measurements. The PL emission spectra of nanophosphors show bright red emission at 612 nm due to hypersensitive electric dipole (ED) 5D0–7F2 transition of Eu3+ ions in Y2O3 lattice. Further, photoluminescence studies indicate that optimum value of the Eu3+ to get best luminescence properties is 12 at%. Surface conjugations of these nanophosphors with water soluble dextran biomolecules have also been performed. Surface conjugated rare earth nanophosphors have great potential for bio-applications." @default.
• W2004665570 created "2016-06-24" @default.
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• W2004665570 date "2012-08-01" @default.
• W2004665570 modified "2023-10-17" @default.
• W2004665570 title "Effect of doping concentration and annealing temperature on luminescence properties of Y2O3:Eu3+ nanophosphor prepared by colloidal precipitation method" @default.
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• W2004665570 doi "https://doi.org/10.1016/j.jlumin.2012.03.004" @default.
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