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Eu3+-Doped Y2O3-SiO2 Nanocomposite Obtained by a Sol-Gel Method

Published online by Cambridge University Press:  21 March 2011

Carla Cannas ,
Mariano Casu ,
Roberta Licheri ,
Anna Musinu ,
Giorgio Piccaluga ,
Adolfo Speghini  and
Marco Bettinelli
Carla Cannas
Affiliation:
Dipartimento di Scienze Chimiche, Università di Cagliari, SP Sestu-Monserrato, Km 0.700, I-09042 Monserrato, Cagliari, Italy
Mariano Casu
Affiliation:
Dipartimento di Scienze Chimiche, Università di Cagliari, SP Sestu-Monserrato, Km 0.700, I-09042 Monserrato, Cagliari, Italy
Roberta Licheri
Affiliation:
Dipartimento di Scienze Chimiche, Università di Cagliari, SP Sestu-Monserrato, Km 0.700, I-09042 Monserrato, Cagliari, Italy
Anna Musinu
Affiliation:
Dipartimento di Scienze Chimiche, Università di Cagliari, SP Sestu-Monserrato, Km 0.700, I-09042 Monserrato, Cagliari, Italy
Giorgio Piccaluga
Affiliation:
Dipartimento di Scienze Chimiche, Università di Cagliari, SP Sestu-Monserrato, Km 0.700, I-09042 Monserrato, Cagliari, Italy
Adolfo Speghini
Affiliation:
Dipartimento Scientifico e Tecnologico, Università di Verona, Ca' Vignal, Strada Le Grazie 15, I-37134 Verona, Italy
Marco Bettinelli
Affiliation:
Dipartimento Scientifico e Tecnologico, Università di Verona, Ca' Vignal, Strada Le Grazie 15, I-37134 Verona, Italy
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Abstract

A Y2O3-SiO2 nanocomposite doped with Eu3+ was obtained by a sol-gel method and characterized by X-ray diffraction, IR, 29Si NMR and laser-excited luminescence spectroscopy. It was found that small (2-3 nm) yttria nanoparticles are homogeneously dispersed in, and interacting with, the amorphous silica matrix. Luminescence spectroscopy indicates that the Eu3+ ion is preferentially located inside or at the surface of highly disordered Y2O3 nanoparticles. These luminescent nanocomposites form a class of materials which could find applications in the field of phosphors.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 676: Symposium Y – Synthesis, Functional Properties and Applications of Nanostructures , 2001 , Y3.18
Copyright
Copyright © Materials Research Society 2001

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References

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