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Rozowska, Justyna
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article
Tunable luminescence of Sr <inf>2</inf>CeO <inf>4</inf>:M <sup>2+</sup> (M = Ca, Mg, Ba, Zn) and Sr <inf>2</inf>CeO <inf>4</inf>:Ln <sup>3+</sup> (Ln = Eu, Dy, Tm) nanophosphors
Abstract
<p>Nanophosphors based on cerium-strontium oxide (Sr <sub>2</sub>CeO <sub>4</sub>), doped with M <sup>2+</sup> or Ln <sup>3+</sup> (M = Ca, Mg, Ba, Zn; Ln = Eu, Dy, Tm) were successfully prepared using a modified Pechini method. The structure of prepared materials has been confirmed and characterized using several techniques such as X-ray powder diffraction (XRD), scanning and transmission electron microscopy (SEM and TEM). The obtained materials were composed of nanocrystals with an average size around ∼50 nm. The luminescence properties of synthesized nanophosphors were characterized by excitation or emission spectra and luminescence lifetimes. The chromaticity coordinates were also calculated to demonstrate changes of the luminescence color. © 2012 American Chemical Society.</p>