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 language | English |
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Pages (from-to) | 181-189 |
Number of pages | 9 |
Journal | Optical Materials |
Volume | 26 |
Issue number | 2 |
DOIs | |
State | Published - Jul 2004 |
Event | Proceedings of the Second International Conference on SGM 2003 - Szklarska Poreba, Poland Duration: 15 Jun 2003 → 20 Jun 2003 |
Keywords
- Lead sulfide
- Porous glasses
- Positron annihilation lifetime spectroscopy
- Zirconium-silica-polyurethane ormocer