- Tytuł:
- Optical Absorption and Luminescence of $Gd_{3}Ga_{5}O_{12}:Cr,Mg$ Epitaxial Films
- Autorzy:
-
Zakharko, Ya.
Syvorotka, I.
Luchechko, A.
Sugak, D.
Vakiv, M. - Powiązania:
- https://bibliotekanauki.pl/articles/1550184.pdf
- Data publikacji:
- 2010-01
- Wydawca:
- Polska Akademia Nauk. Instytut Fizyki PAN
- Tematy:
-
61.72.sd
78.20.-e
78.55.Hx - Opis:
- The optical absorption, emission spectra and luminescence decay kinetics under photoexcitation of $Gd_{3}Ga_{5}O_{12}$ (GGG) garnet epitaxial films doped with $Cr^{3+}$ ions and co-doped with $Cr^{3+}$ and $Mg^{2+}$ ions have been investigated. Luminescence of the GGG:Cr films due to $\text{}^{4}T_{2}$ → $\text{}^{4}A_{2}$ and $\text{}^{2}E$ → $\text{}^{4}A_{2}$ transitions in $Cr^{3+}$ ions have been observed. Increase of the activator ions concentration has an influence on the intensity and decay time of $Cr^{3+}$ ions photoluminescence. Introduction of the magnesium ions leads to partial transformation of chromium valence state $(Cr^{3+} \rightarrow Cr^{4+})$ and to the appearance of a broad absorption band with the maximum at 860 nm. The narrow lines with luminescence maxima at 704 and 706 nm have arisen in the highly doped GGG:Cr,Mg films.
- Źródło:
-
Acta Physica Polonica A; 2010, 117, 1; 111-113
0587-4246
1898-794X - Pojawia się w:
- Acta Physica Polonica A
- Dostawca treści:
- Biblioteka Nauki
Artykuł