Title

Luminescence properties of Eu3+ or Dy3+/Au co-doped SiO2 nanoparticles

Authors

Authors

L. Petit; J. Griffin; N. Carlie; V. Jubera; M. Garcia; F. E. Hernandez;K. Richardson

Comments

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Abbreviated Journal Title

Mater. Lett.

Keywords

SiO2 nanoparticles; europium; dysprosium; luminescence; gold; nanoparticles; SILICA SPHERES; FLUORESCENCE; PARTICLES; GOLD; GLASS; SIZE; BLUE; Materials Science, Multidisciplinary; Physics, Applied

Abstract

Silica nanoparticles, prepared by the Stober method, have been doped with Eu3+, Dy3+, or processed to result in An nanoparticles on the silica surface. The luminescence of the rare earth (RE)-doped SiO2 particles has been studied as a function of the nature of the RE, their concentration and also of the presence of An nanoparticles at the surface of the SiO2 nanoparticles. We have shown that the Eu3+ emission is observable over the experimental conditions examined, whereas it was not possible to observe any emission for Dy3+ doped materials. No enhancement of the Eu3+ emission was observed following the adsorption of gold nanoparticles at the surface of the SiO2 nanoparticle, however an excitation at 250 nm leads to both the emission of the matrix and Eu3+ showing an energy transfer from the SiO2 matrix to Eu3+ ions. (c) 2007 Elsevier B.V. All rights reserved.

Journal Title

Materials Letters

Volume

61

Issue/Number

14-15

Publication Date

1-1-2007

Document Type

Article

Language

English

First Page

2879

Last Page

2882

WOS Identifier

WOS:000247320500013

ISSN

0167-577X

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