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Crystal Phase, Shape and Luminescence Properties of LaPO4:Eu3+ Nanocrystals

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Abstract:

We demonstrated the change of shape and crystal phase of LaPO4:Eu3+ nanomaterials by tuning the temperature of heating. The mechanism related to morphology control of LaPO4:Eu nanorods/nanoparticles are proposed and discussed. We describe the "oriented attachment" growth mechanism for nanorod-to-nanoparticles transformation with increasing the temperature of heating. It is found that the photoluminescence properties of LaPO4:Eu3+ nanostructures are sensitive to the crystal phase and shape. The drastic increase in luminescence intensity (12 times) and decay time increases from 2.66 to 3.34 ms with changing the shape (nanorod to nanoparticle) and crystal phase (hexagonal to monoclinic phase) for the samples prepared by emulsion based method. Our analysis suggests that the manipulation of the photoluminescence property can be done by changing the crystal phase of nanomaterials.

Keywords: CRYSTAL PHASE; LUMINESCENCE; NANOCRYSTALS; RARE-EARTH; SHAPE

Document Type: Research Article

DOI: http://dx.doi.org/10.1166/jnn.2008.166

Publication date: July 1, 2008

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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