Title of article :
Efficient plasmonic coupling between Er3 +:(Ag/Au) in tellurite glasses
Author/Authors :
Rivera، نويسنده , , V.A.G. and Ledemi، نويسنده , , Y. and Osorio، نويسنده , , S.P.A. and Manzani، نويسنده , , D. and Messaddeq، نويسنده , , Y. and Nunes، نويسنده , , L.A.O. and Marega Jr.، نويسنده , , E.، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2012
Abstract :
We report a systematic study of the localized surface plasmon resonance effects on the photoluminescence of Er3 +-doped tellurite glasses containing Silver or Gold nanoparticles. The Silver and Gold nanoparticles are obtained by means of reduction of Ag ions (Ag+ → Ag0) or Au ions (Au3 + → Au0) during the melting process followed by the formation of nanoparticles by heat treatment of the glasses. Absorption and photoluminescence spectra reveal particular features of the interaction between the metallic nanoparticles and Er3 + ions. The photoluminescence enhancement observed is due to dipole coupling of Silver nanoparticles with the 4I13/2 → 4I15/2 Er3 + transition and Gold nanoparticles with the 2H11/2 → 4I13/2 (805 nm) and 4S3/2 → 4I13/2 (840 nm) Er3 + transitions. Such process is achieved via an efficient coupling yielding an energy transfer from the nanoparticles to the Er3 + ions, which is confirmed from the theoretical spectra calculated through the decay rate.
Keywords :
Metallic nanoparticles , Tellurite glass , Plasmonic , Localized surface plasmon resonance
Journal title :
Journal of Non-Crystalline Solids
Journal title :
Journal of Non-Crystalline Solids