Luminescence behaviour BaTiO3 nanocrystallites doped with RE-ions prepared by the sol-gel method

Dariusz Hreniak 1,  Wiesław Stręk 1,  Robert Pązik 2,  Georges Boulon 3

1. Polish Academy of Sciences, Institute of Low Temperature and Structure Research (INTiBS), Okólna 2, Wrocław 50-422, Poland
2. Opole University, Institute of Chemistry (OU), Oleska 48, Opole 45-052, Poland
3. Laboratoire de Physico-Chimie des Matériaux Luminescents, UMR 5620 du CNRS (UCBL), 10 rue A.M. Ampere, Villeurbanne 69622, France

Abstract

The preparation of barium titanate nanocrystallites doped with RE3+-ions (Eu3+, Nd3+, Yb3+) by sol-gel method has been presented. The effect of sintering temperature on optical properties of obtained nanocrystallites has been investigated. The emission and absorption spectra and luminescence decays measurements were performed. The attention was paid into the size-effects and influence of concentration of active ions on emission properties of RE3+:BaTiO3 nanocrystallites. The effect of BaTiO3 grain sizes on photoluminescence properties of nanocrystallites has been noticed. To explain this differences a detail analysis of luminescence spectra has been performed.

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Presentation: oral at E-MRS Fall Meeting 2003, Symposium F, by Dariusz Hreniak
See On-line Journal of E-MRS Fall Meeting 2003

Submitted: 2003-06-15 10:17
Revised:   2003-06-15 10:42
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