Speaker
Ms
Wipada Senanon
(Department of Physics, Faculty of Science, Ubon Ratchathani University, Ubon Ratchathani, THAILAND 34190)
Description
Eu$^{3+}$-doped glass-ceramics were prepared in the system CaO-MgO-Al$_2$O$_3$-ZnO-SiO$_2$. Crystallization and luminescence properties of the glass-ceramics were studies by XRD, SEM, and fluorescence spectroscopy. After the heat treatment at the appropriated conditions, the crystalline phase found in the glass-ceramics was diopside (CaMg(SiO$_3$)$_2$) and Mg(Si$_2$O$_6$). There was no pronounced effect on the phase type due to presence of the Eu$^{3+}$ impurity. Participation of the doping content slightly altered the glass-ceramics microstructure. However, the fluorescence spectra determined from glass-ceramics with addition of Eu$^{3+}$ ions have shown the involvement of the diopside phase during phosphorescence process. With aided by Eu$^{3+}$ ions, a much stronger emission spectra was observed comparing to that of the corresponding glass. Increases of Eu$^{3+}$ concentration also give glass-ceramics with stronger emission of the light in red region.
Authors
Prof.
Anuson Niyompan
(Department of Physics, Faculty of Science, Ubon Ratchathani University, Ubon Ratchathani, THAILAND 34190)
Ms
Wipada Senanon
(Department of Physics, Faculty of Science, Ubon Ratchathani University, Ubon Ratchathani, THAILAND 34190)
Co-author
Mrs
Rungnapa Tipakontitikul
(Department of Physics, Faculty of Science, Ubon Ratchathani University, Ubon Ratchathani, THAILAND 34190)
