Porous glasses as a matrix for incorporation of photonic materials. Pore determination by positron annihilation lifetime spectroscopy

R. Reisfeld*, T. Saraidarov, B. Jasinska

*Corresponding author for this work

Research output: Contribution to journalConference articlepeer-review

18 Scopus citations

Abstract

Porous glasses prepared by the sol-gel technique have a variety of applications when incorporated by photonic materials: tunable lasers, sensors, luminescence solar concentrators, semiconductor quantum dots, biological markers. The known methods of pore size determinations, the nitrogen adsorption and mercury porosimetry allow to determine the sizes of open pores. Positron annihilation lifetime spectroscopy (PALS) allows to determine pore sizes also of closed pores. As an example we have performed measurements of non-doped zirconia-silica-polyurethane (ZSUR) ormocer glasses and the same glasses doped with lead sulfide quantum dots. The pore radii range between 0.25-0.38 nm, total surface area 15.5-23.8 m2/g.

Original languageEnglish
Pages (from-to)181-189
Number of pages9
JournalOptical Materials
Volume26
Issue number2
DOIs
StatePublished - Jul 2004
EventProceedings of the Second International Conference on SGM 2003 - Szklarska Poreba, Poland
Duration: 15 Jun 200320 Jun 2003

Keywords

  • Lead sulfide
  • Porous glasses
  • Positron annihilation lifetime spectroscopy
  • Zirconium-silica-polyurethane ormocer

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