LI Ming-li, LI Yan-hui, CHEN Yi-bin, ZENG Ren-jie. Preparation by Microwave Assisted Synthesis and Heat-treatment at High Temperature and Characterization of Tb<sub>3</sub>Al<sub>5</sub>O<sub>12</sub>:Ce<sup>3+</sup> Phosphor[J]. Chinese Journal of Luminescence, 2008,29(6): 1013-1017
LI Ming-li, LI Yan-hui, CHEN Yi-bin, ZENG Ren-jie. Preparation by Microwave Assisted Synthesis and Heat-treatment at High Temperature and Characterization of Tb<sub>3</sub>Al<sub>5</sub>O<sub>12</sub>:Ce<sup>3+</sup> Phosphor[J]. Chinese Journal of Luminescence, 2008,29(6): 1013-1017DOI:
Microwave assisted synthesis together with heat-treatment at a high temperature were employed to prepare the phosphor of terbium-aluminium garnet doped by Ce
3+
(TAG:Ce).The crystal form
particle topography and the photoluminescence properties of the powder were characterized by XRD
SEM and fluorescence spectrophotometer.SEM results show that the particles of the prepared samples are clear and smooth.Most particles have the size of less than 2 m.The powder has slightly agglomeration.The excitation spectrum consists of two peaks with the highest intensity at 467 nm and the second at 330 nm
respectively
all corresponding to Ce
3+
4f-5d absorption.The third peak is at 375 nm
which corresponds to
7
F
6
5
D
3
absorption of Tb
3+
.Ce
3+
5d-4f transition is also observed clearly
the highest emission peak is at 550 nm.The reaction pathway has been analyzed
implying that the tracer diffusion coefficient of aluminum is bigger than that of terbium in Tb
2
O
3
-Al
2
O
3
system.Compared with the traditional high-temperature solid-state synthesis
this route employed in this investigation has the advantages of easier synthesizing