Crystal growth and photoluminescence of europium-doped strontium titanate prepared by a microwave hydrothermal method
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Data
2015-04-01
Autores
Gonçalves, Rosana de Fátima
Moura, Ana Paula de [UNESP]
Godinho Junior, Mario [UNESP]
Longo, Elson [UNESP]
Machado, Marco Antonio Cunha [UNESP]
Castro, Dayane Aparecida de
Siu Li, Maximo
Marques, Ana Paula de Azevedo
Título da Revista
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Título de Volume
Editor
Elsevier B.V.
Resumo
This article reports that europium-doped strontium titanate (SrTiO3:Eu3+) was successfully synthesized using a co-precipitation method at room temperature with processing in a microwave-hydrothermal system at 140 degrees C for 30 min. Phase composition and structure were examined using X-Ray Diffraction, and Fourier-Transform Raman spectroscopy, revealing a cubic structure with a Pm3m space group. The optical properties were investigated by ultraviolet-visible absorption and photoluminescence, which showed that red emissions originate from Eu3+ transitions. Field emission scanning electron microscopy revealed spherical-like Eu3+ doped SrTiO3 nanoparticles.
Descrição
Palavras-chave
SrTiO3, Nanocrystals, Europium, Photoluminescence
Como citar
Ceramics International. Oxford: Elsevier Sci Ltd, v. 41, n. 3, p. 3549-3554, 2015.