• Medientyp: E-Artikel
  • Titel: Nanoscale CaF2 doped with Eu3+ and Tb3+ through fluorolytic sol-gel synthesis
  • Beteiligte: Ritter, B. [VerfasserIn]; Krahl, T. [VerfasserIn]; Rurack, Knut [VerfasserIn]; Kemnitz, E. [VerfasserIn]
  • Erschienen: BAM-Publica - Publikationsserver der Bundesanstalt für Materialforschung und -prüfung (BAM), 2014
  • Sprache: Englisch
  • DOI: https://doi.org/10.1039/c4tc01073f
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  • Beschreibung: In this article, the high potential of the fluorolytic sol–gel process to synthesize nanoscopic rare earth-doped calcium fluoride sols is shown. Through a fluorolytic sol–gel process we manage to achieve spherical monodisperse ~5 nm sized nanoparticles using a simple and reproducible one-pot-wet chemical route at room temperature. The as-synthesized clear sols exhibit an intense red and green luminescence under UV excitation at room temperature. A spectroscopic study of the sols revealed the characteristic transitions 5D0 → 7FJ of Eu3+ and 5D4 → 7FJ of Tb3+, with 5D0 → 7F2 (611 nm) of Eu3+ and 5D4 → 7F4 (581 nm) of Tb3+ as the most prominent transitions. This facile synthetic strategy is also valuable for developing other luminescent nanoparticles.
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