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Yashaswini; Pandurangappa, C.; Dhananjaya, N., E-mail: ndhananjayas@bmsit.in2019
AbstractAbstract
[en] The CaSO4:Ce3+ (1-9mol%) nanorods were successfully synthesized by co-precipitation method. Preliminary crystallographic, structural and optical studies of the prepared nanorods were done using powder X-ray diffraction (PXRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), selected area electron diffraction (SAED), Fourier transform infrared spectroscopy (FTIR), UV-visible absorption spectroscopy, photoluminescence (PL) and thermoluminescence (TL). The CaSO4:Ce3+ has a single phase hexagonal lattice structure with space group P3121(152). The average crystallite size was calculated using Scherrer’s formula and found to be in the range 41-62 nm which is in good agreement with TEM results. The SEM micrographs shows rod like structure with various sizes. Upon 350 nm excitation, the CaSO4:Ce3+ nanophosphor showed emission at 390, 405 and 430 nm, which is characteristic luminescence of (2F5/2, 2F7/2) transitions of the Ce3+ ions. The chromaticity co-ordinates and correlated color temperature of all the phosphors were well located in blue region. TL glow curve response of the prepared nanorods with 500 Gy -irradiated was studied. TL glow curve contains glow peak at 188 °C. Kinetic parameters was estimated for deconvoluted TL glow peaks and studied in detail.
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Source
Copyright (c) 2019 Societa Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature; Country of input: International Atomic Energy Agency (IAEA)
Record Type
Journal Article
Journal
European Physical Journal Plus; ISSN 2190-5444;
; v. 134(4); p. 1-11

Country of publication
CALCIUM SULFATES, CERIUM IONS, COPRECIPITATION, CRYSTALLOGRAPHY, ELECTRON DIFFRACTION, EXCITATION, FOURIER TRANSFORM SPECTROMETERS, GAMMA RADIATION, GLOW CURVE, HEXAGONAL LATTICES, INFRARED SPECTRA, NANOSTRUCTURES, PHOSPHORS, PHOTOLUMINESCENCE, SCANNING ELECTRON MICROSCOPY, SPACE GROUPS, THERMOLUMINESCENCE, TRANSMISSION ELECTRON MICROSCOPY, ULTRAVIOLET SPECTROMETERS, X-RAY DIFFRACTION
ALKALINE EARTH METAL COMPOUNDS, CALCIUM COMPOUNDS, CHARGED PARTICLES, COHERENT SCATTERING, CRYSTAL LATTICES, CRYSTAL STRUCTURE, DIFFRACTION, ELECTROMAGNETIC RADIATION, ELECTRON MICROSCOPY, EMISSION, ENERGY-LEVEL TRANSITIONS, IONIZING RADIATIONS, IONS, LUMINESCENCE, MEASURING INSTRUMENTS, MICROSCOPY, OXYGEN COMPOUNDS, PHOTON EMISSION, PRECIPITATION, RADIATIONS, SCATTERING, SEPARATION PROCESSES, SPECTRA, SPECTROMETERS, SULFATES, SULFUR COMPOUNDS, SYMMETRY GROUPS, THREE-DIMENSIONAL LATTICES
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