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Preparation, structural characterization, and luminescence properties of Eu3+-doped nanocrystalline ZrO2

Published online by Cambridge University Press:  03 March 2011

A. Speghini ,
M. Bettinelli ,
P. Riello ,
S. Bucella  and
A. Benedetti
A. Speghini
Affiliation:
Università di Verona, Dipartimento Scientifico e Tecnologico and INSTM, UdR Verona, Ca’ Vignal, Strada Le Grazie 15, I-37134 Verona, Italy
M. Bettinelli*
Affiliation:
Università di Verona, Dipartimento Scientifico e Tecnologico and INSTM, UdR Verona, Ca’ Vignal, Strada Le Grazie 15, I-37134 Verona, Italy
P. Riello
Affiliation:
Università Ca’ Foscari di Venezia, Dipartimento di Chimica Fisica and INSTM, Via Torino 155/b, I-30170 Venezia-Mestre, Italy
S. Bucella
Affiliation:
Università Ca’ Foscari di Venezia, Dipartimento di Chimica Fisica and INSTM, Via Torino 155/b, I-30170 Venezia-Mestre, Italy
A. Benedetti
Affiliation:
Università Ca’ Foscari di Venezia, Dipartimento di Chimica Fisica and INSTM, Via Torino 155/b, I-30170 Venezia-Mestre, Italy
*
a)Address all correspondence to this author. e-mail: [email protected]
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Abstract

Eu3+-doped zirconia nanopowders were prepared by the sol-gel technique using two different methods, based on the hydrolysis of zirconium n-propoxide, producing tetragonal and monoclinic zirconia under different preparation conditions. A detailed microstructure characterization was performed through wide angle x-ray scattering, small angle x-ray scattering, trasmission electron microscopy, and nitrogen physisorption measurements. The possible influence of the zirconia crystalline phases and particle sizes on the luminescence properties of the lanthanide ion was investigated. A detailed analysis of the emission spectra of the samples suggested that the dopant Eu3+ ions replace the Zr4+ ions in the zirconia crystal lattice. Moreover, samples prepared by the two different methods were characterized by different decay times of the Eu3+ ion luminescence.

Keywords

LuminescenceSol-gelX-ray diffraction (XRD)
Type
Articles
Information
Journal of Materials Research , Volume 20 , Issue 10 , October 2005 , pp. 2780 - 2791
Copyright
Copyright © Materials Research Society 2005

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