Crystal growth and optical properties of LaAlO3 and Ce-doped LaAlO3 single crystals

被引:41
|
作者
Zeng, XH
Zhang, LH
Zhao, GJ
Xu, J
Hang, Y
Pang, HY
Jie, MY
Yan, CF
He, XM
机构
[1] Chinese Acad Sci, Shanghai Inst Opt & Fine Mech, Shanghai 201800, Peoples R China
[2] Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China
关键词
absorption spectra; fluorescence spectra; transmission spectra; cerium doping; LaAlO3;
D O I
10.1016/j.jcrysgro.2004.07.032
中图分类号
O7 [晶体学];
学科分类号
0702 ; 070205 ; 0703 ; 080501 ;
摘要
Undoped LaAlO3 and Ce-doped LaAlO3 single crystals were grown by the Czochralski process. The segregation coefficient of cerium ions in 1 at% Ce: LaAlO3 is 0.28. The undoped LaAlO3 and Ce-doped LaAlO3 single crystals were characterized by infrared transmission spectra and ultraviolet/visible/near-IR absorption spectra. It was observed that the band-to-band absorption of LaAlO3 host is around 209 nm. Four characteristic f-f transitions of Ce3+ ion at 1923, 2354, 2669, and 3728 cm(-1) and five f-d transitions around 198, 206, 214, 246, and 316 nm in the Ce-doped LaAlO3 crystal were observed. Strong emission around 410 nm was also observed at excitation of 317 nm in the Ce-doped LaAlO3 single crystal. (C) 2004 Elsevier B.V. All rights reserved.
引用
收藏
页码:319 / 324
页数:6
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