Investigation on the crystallization process of Eu3+: CaSiO3 gel using optical and thermal methods
Šećerov, Bojana Lj.
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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. CaSiO3 gel samples were obtained through hydrolysis-condensation reactions of tetraethylorthosilicate as silica source. In this work we studied the process of crystallization of Eu3+-activated CaSiO3 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 Eu3+ doped CaSiO3 powder.
Извор:Acta Physica Polonica. Series A: General Physics, Physics of Condensed Matter, Optics and Quantum Electronics, Atomic and Molecular Physics, Applied Physics, 2007, 112, 5, 969-974
- International School and Conference on Optics and Optical Materials, Sep 03-07, 2007, Belgrade, Serbia