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Synthesis and photoluminescence properties of Sm-doped LaMgB5O10 and GdMgB5O10 |
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| Authors: | Simas Sakirzanovas Artūras Katelnikovas Helga Bettentrup |
| Affiliation: | a Department of General and Inorganic Chemistry, Vilnius University, Naugarduko 24, LT-03225 Vilnius, Lithuania b Department of Chemical Engineering, University of Applied Sciences Münster, Stegerwaldstr. 39, 48565 Steinfurt, Germany |
| Abstract: | Luminescence and reflection spectra as well as luminescence kinetics of the 1 mol% Sm3+-doped crystalline lanthanum magnesium meta borate (LaMgB5O10) and gadolinium magnesium meta borate (GdMgB5O10) were analyzed. Materials were synthesized by conventional solid state route and showed bright orange-red emission under UV excitation. Emission spectra contain sharp and well resolved Sm3+4G5/2→6HJ transitions indicating a strong crystal-field effect. In case of gadolinium compound energy transfer between Gd3+ and Sm3+ was detected. The luminescent kinetics of the Sm3+ in analyzed powders is characterized by single exponential decay and experimental values vary in the range 2.2-2.4 ms. |
| Keywords: | Sm3+ luminescence Time dependent luminescence Energy transfer Lanthanide magnesium meta borates |
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