Luminescence of Tb(3+) doped TeO(2)-ZnO-Na(2)O-PbO glasses containing silver nanoparticles


Autoria(s): KASSAB, Luciana R. P.; ALMEIDA, Ricardo de; SILVA, Davinson M. da; ARAOJO, Cid B. de
Contribuinte(s)

UNIVERSIDADE DE SÃO PAULO

Data(s)

17/04/2012

17/04/2012

2008

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]

Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq)

Coordenacao de Aperfeicoamento de Pessoal de Nivel Superior (CAPES)

Laboratorio de Microscopia Eletronica (IFUSP)

Identificador

JOURNAL OF APPLIED PHYSICS, v.104, n.9, 2008

0021-8979

http://producao.usp.br/handle/BDPI/14730

10.1063/1.3010867

http://dx.doi.org/10.1063/1.3010867

Idioma(s)

eng

Publicador

AMER INST PHYSICS

Relação

Journal of Applied Physics

Direitos

openAccess

Copyright AMER INST PHYSICS

Palavras-Chave #UP-CONVERSION LUMINESCENCE #TELLURITE GLASSES #2-PHOTON ABSORPTION #NM #Physics, Applied
Tipo

article

original article

publishedVersion