Journal
JOURNAL OF CRYSTAL GROWTH
Volume 284, Issue 3-4, Pages 538-543Publisher
ELSEVIER
DOI: 10.1016/j.jcrysgro.2005.07.040
Keywords
crystal morphology; defects; hydrothermal crystal growth; yttrium compounds; phosphors
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Eu-cloped Y2O3 red phosphors with different morphologies and sizes, which show different photoluminescence intensity, were synthesized via a low temperature hydrothermal route with further calcining treatment. From photoluminescence spectra, it is found that Y2O3:Eu3+ microrods have higher photoluminescence intensity than Y2O3:Eu3+ microsheets. It can be ascribed to the perfect crystal structure of microrods. The photoluminescence intensity increase in along with increasing the sizes of Y2O3:Eu3+ microrods, which ascribe to reducing the surface area resulting from the crystallite size increased. (c) 2005 Elsevier B.V. All rights reserved.
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