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Hydrothermal preparation and photoluminescent properties of MgAl2O4: Eu spinel nanocrystals |
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| Authors: | R.J. Wiglusz T. Grzyb W. Strek |
| Affiliation: | a Institute of Low Temperature and Structure Research, Polish Academy of Sciences, P.O. Box 1410, 50-950 Wroclaw, Poland b Department of Rare Earths, Faculty of Chemistry, Adam Mickiewicz University, Grunwaldzka 6, 60-780 Poznan, Poland |
| Abstract: | Nanoplates of the MgAl2O4 spinel doped with Eu3+ ions were prepared by a microwave assisted hydrothermal method. Structural properties of the precursor calcined at 700 and 1000 oC powders were characterized by X-ray diffraction (XRD) and transmission electron microscopy (TEM). According to the obtained XRD patterns the formation of single-phase spinels after calcination was confirmed. The average spinel particle size was determined to be 11 nm after calcination at 700 °C and it increased up to 14 nm after calcination at 1000 °C. The photoluminescent properties of prepared powders with different Eu3+ ion concentrations (0-5% mol) were investigated using excitation and emission spectroscopy at room and low temperatures (77 K). |
| Keywords: | Photoluminescence Spinel Lanthanides Nanocrystals |
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