Photostimulable defects in nano-crystallites in fluorozirconate glasses
| Autor: | J.-M. Spaeth, Andrew Edgar, Grant V. M. Williams, Stefan Schweizer, M. Secu |
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| Rok vydání: | 2005 |
| Předmět: |
Materials science
Photoluminescence Scattering Photostimulated luminescence Diffusion Analytical chemistry Mineralogy Surfaces and Interfaces Condensed Matter Physics PSL Surfaces Coatings and Films Electronic Optical and Magnetic Materials Wavelength Materials Chemistry Crystallite Surface layer Electrical and Electronic Engineering |
| Zdroj: | physica status solidi (a). 202:243-249 |
| ISSN: | 1862-6319 1862-6300 |
| Popis: | The photostimulated luminescence (PSL) from Eu-doped fluorobromo- and fluorochlorozirconate glass-ceramics is reviewed. The PSL is attributed to the characteristic emission of Eu 2+ present in BaX 2 (X = Br, Cl) crystallites which form in the glass upon thermal processing. Both the photoluminescence intensity and the PSL efficiency increase with the size of the crystallites in a way that is consistent with a PSL-inert surface layer surrounding the crystallites. The increasing crystallite sizes also result in decreased optical transparency at the stimulation wavelength due to scattering. |
| Databáze: | OpenAIRE |
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