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Multicolor Light Emission of GdVO4:Ln3+ Nanorods by a Single-Wavelength Excitation

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Highly dispersed Ln3+-doped GdVO4 nanorods were prepared via a hydrothermal method with the assistance of EDTA and CTAB. By systematic structural and property characterization using X-ray diffraction, transition electron microscope, selected area electron diffraction, infrared spectra, and photoluminescence, it is indicated that the as-prepared GdVO4 nanocrystals showed a rod-like shape with an average diameter of about 7 nm and length of 30–50 nm. Under a single-wavelength excitation at 320 nm, GdVO4 nanocrystals doped with Dy3+, Sm3+, and Eu3+ gave surprising multicolor emissions in the visible region, while no blue component at 430 nm from un-doped GdVO4 nanocrystals was seen. This observation was interpreted in terms of the effective energy transfer process between [V4+] A center and lanthanide ions.
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Keywords: ENERGY TRANSFER PROCESS; GDVO4; MULTICOLOR EMISSION; NANORODS

Document Type: Research Article

Publication date: 2010-03-01

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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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