Photoluminescence of cerium-europium co-doped SiO2 phosphor prepared by a sol-gel process

O. M. Ntwaeaborwa, H. C. Swart, R. E. Kroon, P. H. Holloway, J. R. Botha

Research output: Contribution to journalArticlepeer-review

21 Citations (Scopus)


Ce3+ and Eu3+ ions were simultaneously incorporated into a SiO2 matrix by a sol-gel process, resulting in a phosphor that could be used in applications such as fluorescent lamps, solid state lasers, optical waveguides and field emission displays. Variation between blue and red emissions was obtained when co-doped SiO2: Ce,Eu powders with concentrations ranging from 0 to 5 mol% were exposed to ultraviolet light. An enhanced photoluminescence (PL) intensity from Ce3+, probably due to energy transfer from Eu3+, was observed for activator concentrations ranging from 0 to 1 mol%. Comparatively low PL intensities, especially from Ce3+, associated with concentration-quenching were observed for activator concentrations in the range of 2-5 mol%.

Original languageEnglish
Pages (from-to)458-461
Number of pages4
JournalSurface and Interface Analysis
Issue number4
Publication statusPublished - Apr 2006
Externally publishedYes


  • Energy transfer
  • Phosphors
  • Photoluminescence

ASJC Scopus subject areas

  • General Chemistry
  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Materials Chemistry


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