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Abstracts
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 ^{4}T_{2} → ^{4}A_{2} and ^{2}E → ^{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+} → 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.
Discipline
- 61.72.sd: Impurity concentration
- 78.20.-e: Optical properties of bulk materials and thin films(for optical properties related to materials treatment, see 81.40.Tv; for optical materials, see 42.70-a; for optical properties of superconductors, see 74.25.Gz; for optical properties of rocks and minerals, see 91.60.Mk; for optical properties of specific thin films, see 78.66.-w)
- 78.55.Hx: Other solid inorganic materials
Journal
Year
Volume
Issue
Pages
111-113
Physical description
Dates
published
2010-01
Contributors
author
- Faculty of Electronics, Ivan Franko National University of Lviv, 107 Tarnavskogo St., Lviv 79017, Ukraine
author
- Institute for Materials, SRC "Carat", 202 Stryjska St., Lviv 79031, Ukraine
author
- Faculty of Electronics, Ivan Franko National University of Lviv, 107 Tarnavskogo St., Lviv 79017, Ukraine
author
- Institute for Materials, SRC "Carat", 202 Stryjska St., Lviv 79031, Ukraine
author
- Institute for Materials, SRC "Carat", 202 Stryjska St., Lviv 79031, Ukraine
- Lviv Polytechnic National University, 12 Bandera St., 79646 Lviv, Ukraine
author
- Institute for Materials, SRC "Carat", 202 Stryjska St., Lviv 79031, Ukraine
References
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- 6. Ya.M. Zakharko, A.P. Luchechko, I.M. Syvorotka, I.I. Syvorotka, S.B. Ubizskii, S.S. Melnyk, Phys. Status Solidi C 2, 551 (2005)
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Document Type
Publication order reference
Identifiers
YADDA identifier
bwmeta1.element.bwnjournal-article-appv117z118kz