Crystallization and photoluminescence properties of Er-doped microspheres with ytterbium-aluminium garnet composition

The ytterbium-aluminate microspheres with yterbium-aluminium garnet composition doped by 0.25, 0.5, 0.75, 1.0, 3.0 and 5.0 mol.% of Er2O3 were prepared by combination of sol-gel method and flame synthesis. The prepared systems were mostly X-ray amorphous with the presence of traces of ytterbium-alum...

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Published inCeramics international Vol. 49; no. 9; pp. 14895 - 14903
Main Authors Pecušová, Beáta, Prnová, Anna, Valúchová, Jana, Parchovianský, Milan, Klement, Róbert, Galusek, Dušan
Format Journal Article
LanguageEnglish
Published Elsevier Ltd 01.05.2023
Subjects
Er:Yb3Al5O12
Optical properties
Sol–gel processes
Thermal properties
X-ray methods
Thermal properties
Sol–gel processes
X-ray methods
Er:Yb3Al5O12
Optical properties
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Summary:The ytterbium-aluminate microspheres with yterbium-aluminium garnet composition doped by 0.25, 0.5, 0.75, 1.0, 3.0 and 5.0 mol.% of Er2O3 were prepared by combination of sol-gel method and flame synthesis. The prepared systems were mostly X-ray amorphous with the presence of traces of ytterbium-aluminium garnet phase (YbAG), and ytterbium oxide. The thermal analysis of prepared systems shows crystallization of the prepared systems in the temperature interval 914–984 °C in one or two steps, depending on the Er content. Ytterbium aluminate garnet was found to crystallize as the prevailing phase in all heat-treated samples. An almost pure red up-conversion photoluminescence emission with the intensity influenced by the Er2O3 content was observed in prepared systems.
ISSN:0272-8842
1873-3956
DOI:10.1016/j.ceramint.2022.08.070