Rok 2017

• A white phosphor based on oxyfluoride nano-glass-ceramics co-doped with Eu3+ and Tb3+: Energy transfer study

  Publikacja

  • A. Kłonkowski
  • W. Wiczk
  • J. Ryl
  • K. Szczodrowski
  • D. Wileńska

  - JOURNAL OF ALLOYS AND COMPOUNDS - Rok 2017

  Strontium fluoride nanocrystals doped separately with Ln3+ = Eu3+ or Tb3+ ions (95SrF2·5LnF2), as well as co-doped with both the ions (95SrF2·Eu4Tb) were synthesized for comparison. Then, glass-ceramics consisting of the mono-doped or di-doped SrF2 nanocrystals incorporated into amorphous silica (90SiO2·9.5SrF2·0.5Ln or 90SiO2·9.5SrF2·0.1EuF3·0.4Tb) were prepared by sol-gel procedure. The studied materials were characterized by...

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Rok 2015

• Luminescence properties of Eu3+ and Tb3+ doped silica-based xerogels

  Publikacja

  • M. Walas
  • B. Kościelska
  • T. Lewandowski
  • M. S. Łapiński
  • W. Sadowski
  • A. Kłonkowski
  • W. Wiczk
  • I. Bylińska

  - Rok 2015

  Pure SiO2 xerogels and SiO2 xerogels containing SrF2: Eu3+/: Tb3+ crystals were prepared using sol-gel method. Luminescent spectra showed excitation and emission peaks characteristic to Eu3+ and Tb3+ 4f - 4f transitions. ET Tb3+→Eu3+ has been observed. XRD pattern of SiO2 matrix confirmed lack of long range order. Patterns of SiO2-SrF2:Eu3+ and SiO2-SrF2:Tb3+ showed peaks corresponding to SrF2. SEM images have shown agglomerates...