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Investigation on the Crystallization Process of Eu^{3+}:CaSiO_3 Gel Using Optical and Thermal Methods

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Andrić Ž., Krsmanović R., Marinović-Cincović M., Dramićanin T., šećerov B., Dramićanin M.

Acta Physica Polonica A

2007

vol. 112

issue 5

969-974

Alkoxy sol-gel technique is an important preparation method for production of rare-earth based phosphors. Crystallization of gel provides a way to prepare phosphors on lower working temperatures than those required for the solid state reactions. CaSiO_3 gel samples were obtained through hydrolysis-condensation reactions of tetraethylorthosilicate as silica source. In this work we studied the process of crystallization of Eu^{3+}-activated CaSiO_3 gel and decomposition of organic precursors by means of thermal analysis and infrared spectroscopy. Results of scanning electron microscopy and energy-dispersion spectrometry are used to check chemical composition and morphology of synthesized material. Emission spectra and emission lifetime measurements are performed to investigate luminescence properties of Eu^{3+} doped CaSiO_3 powder.

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1 Acta Physica Polonica A

1 2007

1 Andrić Ž.

1 Dramićanin M.

1 Dramićanin T.

1 Krsmanović R.

1 Marinović-Cincović M.

1 šećerov B.

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Investigation on the Crystallization Process of Eu^{3+}:CaSiO_3 Gel Using Optical and Thermal Methods