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Ionic Liquid-Based Approach to Monodisperse Luminescent LaF3:Ce,Tb Nanodiskettes: Synthesis, Structural and Photoluminescent Properties

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In this paper, a novel and easy synthesis of highly luminescent, water-soluble LaF3:Ce,Tb nanodiskettes (25 nm in diameter) by ionic liquid-based hydrothermal process is reported. X-ray diffraction (XRD), transmission electron microscopy (TEM) and field emission scanning electron microscopy (FE-SEM) were used to characterize the structural properties of the LaF3:Ce,Tb nanodiskettes. Ionic liquid [bmim]BF4 acts as both a co-solvent and a reactant during the synthesis. The effects of EDTA-2Na on the formation of green LaF3:Ce,Tb nanodiskette phosphors were studied and discussed. The luminescent properties of LaF3:Ce,Tb nanodiskettes have been investigated under 254 nm excitation both in solid state and dispersed in solution. The quantum efficiency (in solid state) is about 20% compared with commercial green phosphor. The photoluminescent properties show that the as-prepared La0.8Ce0.15Tb0.05F3 nanodiskettes may be applied as phosphors for high-resolution displays and fluorescent labels for biomolecules.
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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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