Plasmonic Coupling in Er 3+:Au Tellurite Glass

Sérgio P.A. Osorio, Victor A.Garcia Rivera, Luiz Antonio O. Nunes, Euclydes Marega, Danilo Manzani, Younes Messaddeq

Resultado de la investigación: Contribución a una revistaArtículorevisión exhaustiva

37 Citas (Scopus)

Resumen

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 °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 4H 11/24I 13/2 (805 nm) and 4S 3/24I 13/2 (840 nm), with annealing time till 7.5 h. The measured lifetime of the levels 4H 11/2 and 4S 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.

Idioma originalInglés
Páginas (desde-hasta)53-58
Número de páginas6
PublicaciónPlasmonics
Volumen7
N.º1
DOI
EstadoPublicada - mar 2012

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