(Lu0.3Gd0.7)(2)SiO5:Y3+ single crystals grown by the laser floating zone method: structural and optical studies
authors Rey-Garcia, F; Rodrigues, J; Fernandes, AJS; Soares, MR; Monteiro, T; Costa, FM
nationality International
journal CRYSTENGCOMM
keywords VISIBLE LUMINESCENCE; ENERGY-TRANSFER; DY3+; TB3+; EMISSION; EU3+; SM3+; EXCITATION; LU2SIO5; LIGHT
abstract 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.
publisher ROYAL SOC CHEMISTRY
issn 1466-8033
year published 2018
volume 20
issue 45
beginning page 7386
ending page 7394
digital object identifier (doi) 10.1039/c8ce01319e
web of science category Chemistry, Multidisciplinary; Crystallography
subject category Chemistry; Crystallography
unique article identifier WOS:000450658400019
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