Observation of the gap blueshift on Gd2O3:Eu3+ nanoparticles

Observation of the gap blueshift on Gd2O3:Eu3+ nanoparticles

We report on the characterization of Gd2O3 nanocrystals of different sizes doped with 2.5 at. % Eu3+ ions. The particles have been synthesized by a sol-lyophilisation process. This method allows the synthesis of 7–100 nm diameter cubic-phase particles. The photoluminescence properties have been stud...

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Veröffentlicht in:Journal of applied physics 2004-07, Vol.96 (1), p.650-653
Hauptverfasser: Mercier, Bruno, Dujardin, Christophe, Ledoux, Gilles, Louis, Cédric, Tillement, Olivier, Perriat, Pascal
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Engineering Sciences
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container_issue 1
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container_title Journal of applied physics
container_volume 96
creator Mercier, Bruno
Dujardin, Christophe
Ledoux, Gilles
Louis, Cédric
Tillement, Olivier
Perriat, Pascal
description We report on the characterization of Gd2O3 nanocrystals of different sizes doped with 2.5 at. % Eu3+ ions. The particles have been synthesized by a sol-lyophilisation process. This method allows the synthesis of 7–100 nm diameter cubic-phase particles. The photoluminescence properties have been studied from visible to vacuum ultraviolet (VUV) wavelengths. Compared to the bulk material properties, some important changes on the luminescence are observed. In particular, some lines are strengthened when the particle’s size is diminished. In another article we had ascribed these bands to doping ions located on sites close to the surface. Both contributions of volume and surface states are observed. VUV spectroscopy performed selectively on the volumes states has allowed in sesquioxide nanoparticles to point out a gap blueshift due to quantum confinement.
doi_str_mv 10.1063/1.1756690
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subjects Condensed Matter
Engineering Sciences
Materials
Physics
title Observation of the gap blueshift on Gd2O3:Eu3+ nanoparticles
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