title: Localized surface plasmon resonance interaction with Er3+-doped tellurite glass.
abstract: We show the annealing effect on silver and Erbium-doped tellurite glasses in the formation of nanoparticles (NPs) of silver, produced by the reduction of silver (Ag+ → Ag0), aiming to an fluorescence enhancement. The absorption spectra show typical Localized Surface Plasmon Resonance (LSPR) band of Ag0 NP in addition to the distinctive absorption peaks of Er3+ ions. Both observations demonstrate that the photoluminescence enhancement is due to the coupling of dipoles formed by NPs with the Er3+ 4I(13/2) → 4I(15/2) transition. This plasmon energy transfer to the Er3+ ions was observed in the fluorescence spectrum with a blue-shift of the peaks.
authors.affiliation: Instituto de Física de São Carlos-INOF, USP, Caixa Postal 369, 13560-970, São Carlos–SP, Brasil. garcia@ursa.ifsc.usp.br
authors.forename: V A G
authors.initials: VA
authors.lastname: Rivera
authors.forename: S P A
authors.initials: SP
authors.lastname: Osorio
authors.forename: Y
authors.initials: Y
authors.lastname: Ledemi
authors.forename: D
authors.initials: D
authors.lastname: Manzani
authors.forename: Y
authors.initials: Y
authors.lastname: Messaddeq
authors.forename: L A O
authors.initials: LA
authors.lastname: Nunes
authors.forename: E
authors.initials: E
authors.lastname: Marega