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Photostimulable defects in nano-crystallites in fluorozirconate glasses

Domenii publicaţii > Fizica + Tipuri publicaţii > Articol în volumul unei conferinţe

Autori: Schweizer S, Spaeth JM, Secu M, Edgar A, Williams GVM

Editorial: WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim, phys. stat.sol (a), 202, p.243-249, 2005.

Rezumat:

The photostimulated luminescence (PSL) from Eu-doped fluorobromo- and fluorochlorozirconate glass-ceramics is reviewed. The PSL is attributed to the characteristic emission of Eu2+ present in BaX2 (X = Br,Clcrystallites 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.

Cuvinte cheie: inorganic materials, Amorphous materials; glasses, luminescence