Plasmonic Coupling in Er3+:Au Tellurite Glass
| Contribuinte(s) |
UNIVERSIDADE DE SÃO PAULO |
|---|---|
| Data(s) |
23/10/2013
23/10/2013
2012
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| Resumo |
In this paper, we report on luminescence and absorbance effects of Er+3:Au-doped tellurite glasses synthesized by a melting-quenching and heat treatment technique. After annealing times of 2.5, 5.0, 7.5, and 10.0 h, at 300 A degrees C, the gold nanoparticles (GNP) effects on the Er+3 are verified from luminescence spectra and the corresponding levels lifetime. The localized surface plasmon resonance around 800 nm produced a maximum fluorescence enhancement for the band ranging from 800 to 840 nm, corresponding to the transitions H-4(11/2) -> aEuro parts per thousand I-4(13/2) (805 nm) and S-4(3/2) -> aEuro parts per thousand I-4(13/2) (840 nm), with annealing time till 7.5 h. The measured lifetime of the levels H-4(11/2) and S-4(3/2) confirmed the lifetime reduction due to the energy transfer from the GNP to Er+3, causing an enhanced photon emission rate in these levels. Brazilian agency CNPq Brazilian agency CNPq Brazilian agency FAPESP Brazilian agency Fapesp Brazilian agency CEPOF/INOF Brazilian agency CEPOF/INOF |
| Identificador |
PLASMONICS, NEW YORK, v. 7, n. 1, supl. 4, Part 1-2, pp. 53-58, MAR, 2012 1557-1955 http://www.producao.usp.br/handle/BDPI/35737 10.1007/s11468-011-9275-7 |
| Idioma(s) |
eng |
| Publicador |
SPRINGER NEW YORK |
| Relação |
PLASMONICS |
| Direitos |
closedAccess Copyright SPRINGER |
| Palavras-Chave | #GOLD NANOPARTICLES #LOCALIZED SURFACE PLASMON RESONANCE #FLUORESCENCE ENHANCEMENT #TELLURITE GLASS #EMISSION #FIBER #CHEMISTRY, PHYSICAL #NANOSCIENCE & NANOTECHNOLOGY #MATERIALS SCIENCE, MULTIDISCIPLINARY |
| Tipo |
article original article publishedVersion |
