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Article Dans Une Revue Chemical Physics Letters Année : 2006

Luminescence enhancement by energy transfer in core-shell structures

Catherine Louis
  • Fonction : Auteur
Stéphane G. Roux
G. Ledoux
C. Dujardin
  • Fonction : Auteur
Olivier Tillement
B.L. Cheng
  • Fonction : Auteur

Résumé

An energy transfer between the two parts of a nanocomposite was shown in a core-shell made of Tb-doped gadolinium oxide (the core) and polysiloxane (the shell). Polysiloxane is found to act as an antenna which absorbs light and transfers the excitation energy to the rare-earth doped oxide, allowing then an enhancement by a factor of 4 of the luminescence of the rare earth cations. Both energy transfer and quenching reduction contribute to the luminescence enhancement observed upon coating. The Letter shows how these relative contributions can be quantitatively discriminated from excitation spectra.

Domaines

Matériaux
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Dates et versions

hal-00436146 , version 1 (26-11-2009)

Identifiants

  • HAL Id : hal-00436146 , version 1

Citer

Catherine Louis, Stéphane G. Roux, G. Ledoux, C. Dujardin, Olivier Tillement, et al.. Luminescence enhancement by energy transfer in core-shell structures. Chemical Physics Letters, 2006, pp.157-160. ⟨hal-00436146⟩
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