Porosity structure in photon active glasses

Bozena Jasińska*, Monika Śniegocka, Renata Reisfeld, Elena Zigansky

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

Two kinds of photon active glasses were investigated using positron annihilation lifetime spectroscopy (PALS). Both kinds of glasses were prepared using a sol-gel technique, doped by complex of ruthenium tris bipyridyl chloride. Glasses differed from the initial matrix: the first one was prepared using silicon oxide while the second one - zircon oxide. The ortho-positronium (o-Ps) lifetime and intensities were determined from lifetime spectra. Different porosity structure concluded from PALS measurements was found in both cases. In the silica based glasses small free volumes (angstrom size) and pores (from 1 to 10 nm) existed in the material. On the contrary, in zirconia based glasses small intermolecular voids were produced in the structure only, independently of the way of material preparation.

Original languageEnglish
Pages (from-to)241-244
Number of pages4
JournalNukleonika
Volume58
Issue number1
StatePublished - 2013

Keywords

  • Glass
  • Ortho-positronium (o-Ps)
  • Porosity
  • Positron annihilation lifetime spectroscopy (PALS)
  • Sol-gel technique

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