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Sol-gel synthesis of cerium-doped yttrium silicates and their luminescent properties

Published online by Cambridge University Press:  31 January 2011

Jakub Růžička ,
Daniel Nižňanský ,
Martin Nikl ,
Romana Kucerková  and
Carla Cannas
Daniel Nižňanský*
Affiliation:
Faculty of Science, Charles University of Prague, Department of Inorganic Chemistry, Hlavova 2030, 12840 Prague, Czech Republic
Romana Kucerková
Affiliation:
Institute of Physics of AS CR v.v.i., Cukrovarnicka 10, 16253 Prague, Czech Republic
Carla Cannas
Affiliation:
University of Cagliari, Chemistry Department, S.S. 554 bivio per Sestu, 09042 Monserrato (Cagliari), Italy
*
a)Address all correspondence to this author. e-mail: niznansk@natur.cuni.cz
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Abstract

The Ce-doped yttrium ortho- and pyrosilicate powders were prepared in a powder form by the formamide-modified sol-gel method. Crystal structure was checked by x-ray diffraction and sample morphology by transmission electron microscopy measurements. Both ortho- and pyrosilicate pure phases were obtained by the previously mentioned preparation procedure and proper annealing temperature was determined to obtain the maximum scintillation efficiency. Luminescence spectra and decays were measured to better evaluate the source of efficiency losses in the scintillator mechanism of samples heat-treated at lower temperatures. The potential of this preparation method for manufacturing the nanocomposite scintillators was discussed.

Keywords

Sol-gelLuminescenceCe
Type
Articles
Information
Journal of Materials Research , Volume 25 , Issue 2 , February 2010 , pp. 229 - 234
Copyright
Copyright © Materials Research Society 2010

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