Lanthanum aluminate(LaAlO3) nanophosphors doped with erbium were successfully synthesized by a combustion process. The powders were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy(TEM) and fluorescence spectroscopy. Pure LaAlO3 phase was obtained at 800 C heated for 4h, with an average crystal size, as determined by TEM, of 60nm. Infrared emission spectra and decay times of main luminescence transitions were measured at room temperature. A strong emissionis reported at 1550nm from the (4I13=2-4I15=2) transition, which intensity depends on the Er concentration.
Combustion synthesis and spectroscopic charaterisation of LaAlO3 nanophosphors doped Er3+ ions
BENEDETTI, Alvise;F. Enrichi;
2013-01-01
Abstract
Lanthanum aluminate(LaAlO3) nanophosphors doped with erbium were successfully synthesized by a combustion process. The powders were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy(TEM) and fluorescence spectroscopy. Pure LaAlO3 phase was obtained at 800 C heated for 4h, with an average crystal size, as determined by TEM, of 60nm. Infrared emission spectra and decay times of main luminescence transitions were measured at room temperature. A strong emissionis reported at 1550nm from the (4I13=2-4I15=2) transition, which intensity depends on the Er concentration.
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