Luminescence of Tb(3+) doped TeO(2)-ZnO-Na(2)O-PbO glasses containing silver nanoparticles
Carregando...
Data
2008-11-01
Autores
Kassab, Luciana R. P. [UNESP]
de Almeida, Ricardo
da Silva, Davinson M.
de Araojo, Cid B.
Título da Revista
ISSN da Revista
Título de Volume
Editor
American Institute of Physics (AIP)
Resumo
Luminescence properties of Tb(3+) doped TeO(2)-ZnO-Na(2)O-PbO glasses containing silver nanoparticles (NPs) were investigated. The absorption band due to the surface plasmon resonance in the NPs was observed. Its amplitude increases with the heat treatment of the samples that controls the nucleation of the NPs. Tb(3+) emission bands centered at approximate to 485, approximate to 550, approximate to 585, and approximate to 623 nm were detected for excitation at 377 nm. The whole spectrum is intensified by the appropriate annealing time of the samples. Enhancement by approximate to 200% of the Tb(3+) luminescence at 550 nm was observed for samples annealed at 270 degrees C during 62 h. This enhancement effect is due to the local field amplitude that increases with the amount of silver NPs and their aggregates. (C) 2008 American Institute of Physics. [DOI: 10.1063/1.3010867]
Descrição
Palavras-chave
Como citar
Journal of Applied Physics. Melville: Amer Inst Physics, v. 104, n. 9, p. 3, 2008.