Cerium and europium nanospecies in quartz glass: Synthesis and spectral study: Cer- und Europium-haltige Nanopartikel in Quarzglas: Synthese und spektroskopische Eigenschaften

M. Ignatovych, M. Borysenko, L. Davydenko, L. Borysenko, M. Veres, L. Himics, M. Koós

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Quartz glass doped with cerium (0.02-0.36 wt%) and europium (0.01-0.04 wt%) nanoparticles were prepared by a modified sol-gel method. Ultraviolet-visible optical absorption and steady-state photoluminescence excitation-emission techniques were applied for spectral characterization of samples. Absorption spectra for Ce/SiO2 samples showed two intense and broad bands of charge-transfer (CT) character at 240 and 300 nm that were attributed to the O2- → Ce3+ and O2- → Ce4+ transitions, respectively. For Eu/SiO2 and CeEu/SiO2 samples, CT bands O2- → Eu3+ at 225 nm and non-resolved ones O2- → Ce3+ at 245 nm were registered, respectively. Photoluminescence spectra of Ce/SiO2 samples showed the presence of Ce3+ ions emitting in the range of 413-438 nm caused by the 5d-4f transition. Photoluminescence spectra of Eu/SiO2 and CeEu/SiO2 samples featured the characteristic orange-red emission arising from 5D07Fn manifolds (570-750 nm) of Eu3+ ions. The electric-dipole 5D07F2 transition at 615 nm dominated in the Eu/SiO2 samples while the magnetic-dipole transition 5D07F1 at 591 nm dominated in the CeEu/SiO2 double-doped samples.

Original languageEnglish
Pages (from-to)193-197
Number of pages5
JournalMaterialwissenschaft und Werkstofftechnik
Volume47
Issue number2-3
DOIs
Publication statusPublished - Mar 1 2016

Keywords

  • Cerium
  • Europium
  • Photoluminescence
  • Sol-gel synthesis
  • ultraviolet-visible
  • UV-vis

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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