Terbium doped lanthanum aluminate (LaAlO3) nanophosphors were successfully synthesized by a combustion process using concentrated solution of lanthanum nitrates and aluminate as oxidiser, and glycine acid as fuel. The powders were characterized by infrared spectroscopy (IR), X-ray diffraction (XRD), Rietveld refinement, scanning electron microscopy (SEM), transmission electron microscopy (TEM) and fluorescence spectroscopy. Pure LaAlO3 phase was obtained at 800 degrees C heated for 4 h, without formation of any intermediate phase, with an average crystal size, as determined by TEM, of 60 nm. Intense green emission is reported at 542 nm, from the D-5(4) level, which intensity depends on Tb concentration. (C) 2013 Elsevier B.V. All rights reserved.

Combustion synthesis and photoluminescence of Tb3+ doped LaAlO3 nanophosphors

Benedetti, A.;Enrichi, F.;
2013

Abstract

Terbium doped lanthanum aluminate (LaAlO3) nanophosphors were successfully synthesized by a combustion process using concentrated solution of lanthanum nitrates and aluminate as oxidiser, and glycine acid as fuel. The powders were characterized by infrared spectroscopy (IR), X-ray diffraction (XRD), Rietveld refinement, scanning electron microscopy (SEM), transmission electron microscopy (TEM) and fluorescence spectroscopy. Pure LaAlO3 phase was obtained at 800 degrees C heated for 4 h, without formation of any intermediate phase, with an average crystal size, as determined by TEM, of 60 nm. Intense green emission is reported at 542 nm, from the D-5(4) level, which intensity depends on Tb concentration. (C) 2013 Elsevier B.V. All rights reserved.
Combustion process
Lanthanum aluminate
Terbium
Nanoparticles
Photoluminescence
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11562/1064319
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