(Lu0.3Gd0.7)2SiO5:Y3+ single crystals grown by the laser floating zone method: structural and optical studies

被引：10
作者：
Rey-Garcia, F. [1 ,2 ]
Rodrigues, J. [1 ,2 ]
Fernandes, A. J. S. [1 ,2 ]
Soares, M. R. [3 ]
Monteiro, T. [1 ,2 ]
Costa, F. M. [1 ,2 ]
机构：
[1] Univ Aveiro, Phys Dept, P-3810193 Aveiro, Portugal
[2] Univ Aveiro, I3N, P-3810193 Aveiro, Portugal
[3] Univ Aveiro, CICECO Aveiro Inst Mat, P-3810193 Aveiro, Portugal
来源：
CRYSTENGCOMM | 2018年 / 20卷 / 45期
关键词：
VISIBLE LUMINESCENCE; ENERGY-TRANSFER; DY3+; TB3+; EMISSION; EU3+; SM3+; EXCITATION; LU2SIO5; LIGHT;
D O I：
10.1039/c8ce01319e
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Highly transparent (Lu0.3Gd0.7)(2)SiO5:Y3+ (5 at%) single crystals were obtained by the laser floating zone (LFZ) technique in air at 10 mm h(-1). Scanning electron microscopy (SEM/EDS) allowed observation of homogeneous crystalline fibres of B-type oxyorthosilicates with a C2/c monoclinic structure, as revealed by X-ray diffraction and Raman spectroscopy studies. Optical measurements on 0.32 mm thick samples revealed approximate to 86% transmission in the visible-NIR range, together with intense intra 4f(7) transitions of Gd3+ ions from the S-8(7/2) ground state in the UV region. Additionally, as a good indication of being a host matrix for photonic applications, a wide bandgap favouring the introduction of energy levels in the forbidden band was observed in these materials through photoluminescence (PL) and photoluminescence excitation (PLE) studies.
引用
收藏
页码：7386 / 7394
页数：9
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