Photoluminescence Inhomogeneity of LGSO : Ce Scintillator Crystal

Shevchenko, D.; Kononets, V.V.; Dobrovolskas, D.; Neicheva, S.; Starzhinskiy, N.G.; Sidletskiy, O.Ts.; Lebbou, K.; Tamulaitis, G.

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Title	Photoluminescence Inhomogeneity of LGSO : Ce Scintillator Crystal
Authors	Shevchenko, D. Kononets, V.V. Dobrovolskas, D. Neicheva, S. Starzhinskiy, N.G. Sidletskiy, O.Ts. Lebbou, K. Tamulaitis, G.
ORCID
Keywords	Confocal microscopy Luminescence LGSO Scintillator
Type	Conference Papers
Date of Issue	2013
URI	http://essuir.sumdu.edu.ua/handle/123456789/35261
Publisher	Sumy State University
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Citation	Photoluminescence Inhomogeneity of LGSO : Ce Scintillator Crystal [Текст] / D. Shevchenko, V.V. Kononets, D. Dobrovolskas et al. // Nanomaterials: Applications & Properties (NAP-2013) : 2-nd International conference, Alushta, the Crimea, September 17-22, 2012 / Edited by: A. Pogrebnjak. - Sumy : Sumy State University, 2013. - V.2, No1. - 01PCSI07
Abstract	Spatial distribution of photoluminescence (PL) parameters in Lu2SiO5 : Ce (LSO : Ce) and Lu2xGd2 – 2xSiO5 : Ce (LGSO : Ce) are investigated using confocal microscopy. The PL spectra of both crys-tals are dominated by a single band peaked at 510 nm. A low intensity sub-band peaked at 600 nm is observed in LGSO:Ce. Spatial inhomogeneities down to submicron size are observed in spectral center of mass mapping images of LGSO : Ce while the spatial distributions of spectrally-integrated PL intensity and PL peak position showed no large variations. The inhomogeneities in LGSO : Ce are caused by the spectral variation of the long-wavelength sub-band and are attributed to Ce3+ located in CeO6 polyhedra. The results are explained by Lu / Gd ratio fluctuations in mixed LGSO : Ce crystals. When you are citing the document, use the following link http://essuir.sumdu.edu.ua/handle/123456789/35261
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