Photoluminescence properties of CaTiO3:Eu3+ nanophosphor obtained by the polymeric precursor method

Autor(es)

Mazzo, Tatiana Martelli ^[1] ; da Rocha Oliveira, Lucas Mendonca ^[1] ; Macario, Leilane Roberta ^[2] ; Avansi, Jr., Waldir ^[3] ; Andre, Rafaela da Silveira ^[1] ; Viana Rosa, Ieda Lucia ^[1] ; Varela, Jose Arana ^[2] ; Longo, Elson ^[2]

Afiliação do(s) autor(es)

^[1] Univ Fed Sao Carlos, Dept Quim, INCTMN, LIEC, BR-13565905 Sao Carlos, SP - Brazil

^[2] Univ Estadual Paulista, Inst Quim, INCTMN, LIEC, BR-14800900 Araraquara, SP - Brazil

^[3] Univ Fed Sao Carlos, Dept Fis, BR-13565905 Sao Carlos, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Materials Chemistry and Physics; v. 145, n. 1-2, p. 141-150, MAY 15 2014.
• Citações Web of Science: 14

Resumo

Europium-doped calcium titanate nanophosphors were synthesized by the polymeric precursor method (PPM) at different temperatures. X-ray absorption near edge structure (XANES) spectroscopy reveals that the introduction of Eu3+ ions into the CaTiO3 network induces to significant changes in the local order disorder relationship around both {[}TiO6] and {[}CaO12] complex clusters. The X-ray diffraction (XRD) and FT-Raman reveals that the presence of the Eu3+ ions favors the structural organization at long and short ranges, which produces a faster crystallization of the CT orthorhombic phase. The increase of the annealed temperature and the Eu3+ concentration for CT:Eu3+ powders induces to a decrease in the CT:Eu3+ nanoparticle sizes. Crown Copyright (C) 2014 Published by Elsevier B.V. All rights reserved. (AU)

• Processo FAPESP: 98/14324-0 - Multidisciplinary Center for Development of Ceramic Materials
• Beneficiário: Elson Longo da Silva
• Modalidade de apoio: Auxílio à Pesquisa - Centros de Pesquisa, Inovação e Difusão - CEPIDs