Journal
JOURNAL OF MATERIALS RESEARCH
Volume 22, Issue 8, Pages 2288-2296Publisher
CAMBRIDGE UNIV PRESS
DOI: 10.1557/JMR.2007.0290
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Nano-sized EU3+-activated Gd1-xVO4 phosphors were prepared via hydrothermal reaction coupled with the coprecipitation method at a low temperature (230 degrees C). The coprecipitation provided chemical homogeneity. However, it resulted in a low crystallinity and reduced emission and excitation characteristics. Raman study showed that Gd-O bond lengths changed in powders, depending on the level of crystallinity. The particle morphology was controlled using ethylenediaminetetra-acetic acid during the hydrothermal reaction. Particle shapes in the nano-size range affected the vibration of atoms in the lattice, changing photoluminescence properties.
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