<abstract xml:lang="en" xmlns="http://www.w3.org/1999/xhtml">Cathodoluminescence (CL) spectra and decay times have been studied for oxyfluoride glasses and glass ceramics of the system: SiO2 - Al203 - Na2O - LaF3 - NaF, activated by terbium and ytterbium.The CL spectra of the glasses and glass ceramics show characteristic Tb3+ luminescence bands: blue (5D3 → 7FJ) and green (5D4 → 7FJ) groups. With increasing terbium concentration the blue- to green-group ratio decreases.The CL decay curves can be sufficiently well approximated by two exponents - fast and slow. Decay times for the blue-group CL bands are faster than for those of green group.As the terbium concentration increases, the lifetimes for the lines of the blue group shorten, while for the green group they remain unchanged. This could be explained by the cross-relaxation between the transitions 5D3 → 5D4 and 7F6 → 7F0 of two terbium ions.</abstract>

Cathodoluminescence (CL) spectra and decay times have been studied for oxyfluoride glasses and glass ceramics of the system: SiO2 - Al203 - Na2O - LaF3 - NaF, activated by terbium and ytterbium.The CL spectra of the glasses and glass ceramics show characteristic Tb3+ luminescence bands: blue (5D3 → 7FJ) and green (5D4 → 7FJ) groups. With increasing terbium concentration the blue- to green-group ratio decreases.The CL decay curves can be sufficiently well approximated by two exponents - fast and slow. Decay times for the blue-group CL bands are faster than for those of green group.As the terbium concentration increases, the lifetimes for the lines of the blue group shorten, while for the green group they remain unchanged. This could be explained by the cross-relaxation between the transitions 5D3 → 5D4 and 7F6 → 7F0 of two terbium ions.

Cathodoluminescence of Terbium- and Ytterbium-Activated Oxyfluoride Glasses and Glass Ceramics

Institute of Solid State Physics, University of Latvia, 8 Kengaraga Str., Rīga, LV-1063, LATVIA

Faculty of Physics and Mathematics, University of Latvia, 8 Zellu Str., Rīga, LV-1002, LATVIA

Latvian Journal of Physics and Technical Sciences

Cathodoluminescence (CL) spectra and decay times have been studied for oxyfluoride glasses and glass ceramics of the system: SiO2 - Al203 - Na2O - LaF3 - NaF,...

Cathodoluminescence of Terbium- and Ytterbium-Activated Oxyfluoride Glasses and Glass Ceramics

Pubblicato online: 10 feb 2011

Pagine: 48 - 54

DOI: https://doi.org/10.2478/v10047-010-0024-z

Parole chiave
oxyfluoride, cathodoluminescence, terbium, ytterbium

This content is open access.

Cathodoluminescence of Terbium- and Ytterbium-Activated Oxyfluoride Glasses and Glass Ceramics

Pubblicato online: 10 feb 2011

Pagine: 48 - 54

DOI: https://doi.org/10.2478/v10047-010-0024-z

Parole chiaveoxyfluoride, cathodoluminescence, terbium, ytterbium

This content is open access.

Parole chiave
oxyfluoride, cathodoluminescence, terbium, ytterbium