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- W1651835507 abstract "ABSTRACT Cerium‐doped Sr 4 Al 14 O 25 phosphor is prepared using a single‐step combustion synthesis and its X‐ray diffraction (XRD), scanning electron microscopy (SEM), photoluminescence (PL) and thermoluminescence (TL) properties are characterized. XRD reveals the formation of the desired phase in the prepared sample. SEM micrographs of the prepared Sr 4 Al 14 O 25 phosphor show that the particle size is 10 µm. The prepared Sr 4 Al 14 O 25 , along with Sr 4 Al 14 O 25 :Ce x ( x = 0.5–5 mol%) shows a PL emission peak at 314 nm under UV excitation of 262 nm wavelength due to 5d → 4f transition. The phosphor is suitable for higher concentrations of Ce ions. The TL glow peak reveals three clearly visible distinct peaks at temperatures around 130, 231 and 336ºC. The three peaks are separated by deconvolution and kinetic parameters calculated using Chen's peak shape method. The calculation shows that the reaction follows second‐order kinetics with activation energy ( E ) values of 0.52, 0.81 and 1.12 eV, and frequency factor ( s ) values of 5.58 × 10 5 , 4.53 × 10 7 and 4.57 × 10 8 s ‐1 for the three individual peaks. Copyright © 2014 John Wiley & Sons, Ltd." @default.
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- W1651835507 date "2014-06-06" @default.
- W1651835507 modified "2023-10-16" @default.
- W1651835507 title "Luminescence in Sr<sub>4</sub>Al<sub>14</sub>O<sub>25</sub>:Ce<sup>3+</sup>aluminate phosphor" @default.
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- W1651835507 doi "https://doi.org/10.1002/bio.2708" @default.
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