W. T. Barbosa, C. M. Álvarez-Docio, R. García-Carrodeguas, M. Fook, M. A. Rodríguez, R. E. Rojas-Hernandez
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引用次数: 0
Abstract
The photoluminescent behavior of Eu-doped Sr 3 Al 2 O 6 obtained by highly efficient solution combustion synthesis is reported. In order to understand the influence of the fuel on the synthesis, the stoichiometric quantity and an excess of fuel were evaluated. By adjusting the amount of fuel, different luminescence responses were obtained, allowing europium cations incorporation into the Sr 3 Al 2 O 6 lattice to serve as effective luminescence activators in such a short time during the rapid combustion synthesis process. The higher amount of fuel in the presence of the oxidizing agent produced Sr 3 Al 2 O 6 :Eu particles with higher phosphorescence brightness, owing to the increase of the reduction process from Eu 3+ to Eu 2+ . The synthesized phosphor showed an intense band emission centered at 515 nm and could be excited over a broad spectral range in the UV-visible region. Particles having nanostructured flake-type morphology were obtained, which was considered a micro-nanofunctional candidate for practical applications.
期刊介绍：
A Revista Cerâmica, órgão oficial da Associação Brasileira de Cerâmica (ABCERAM) publica contribuições originais de interesse na área de cerâmica, compreendendo arte cerâmica, abrasivos, biocerâmicas, cerâmicas avançadas, cerâmica branca, cerâmica de mesa, cerâmica eletroeletrônica, cerâmica estrutural, cerâmica magnética, cerâmica nuclear, cerâmica óptica, cerâmica química, cerâmica termomecânica, cerâmica vermelha, cimento, compósitos de matriz cerâmica, materiais refratários, materiais de revestimento, matérias-primas, vidrados, vidros e vitrocerâmicas, análise microestrutural, ciência básica, instrumentação, processos de fabricação, síntese de pós, técnicas de caracterização etc.
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