| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 5398336 | Journal of Luminescence | 2016 | 21 Pages |
Abstract
Tb3+or/and Cr3+ doped or co-doped Y3Al5O12(YAG) garnets were prepared by a citric acid sol-gel method. Single-phase YAG, YAG:Tb3+,YAG:Cr3+and YAG:Cr3+,Tb3+powders were obtained already at 1000 °Cand were further annealed at 1600 °C to increase the crystallinity. All materials were characterized by X-ray diffraction (XRD), thermogravimetric (TG), photoluminescence (PL), reflection and photoluminescence decay measurements. Scanning electron microscopy (SEM) was used for morphology description. Luminescence measurements indicated that Tb3+ ions located at dodecahedral sites transfer absorbed energy to Cr3+ ions located at octahedral sites resulting quenched Tb3+ and strengthened Cr3+ emission in YAG:Cr3+, Tb3+ upon 273 nm excitation.
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Authors
M. Skruodiene, M. Misevicius, M. Sakalauskaite, A. Katelnikovas, R. Skaudzius,