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Optical Properties of Nd3+ Ion-Doped ZnO Nanocrystals

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Hexagonal Nd3+-doped ZnO nanocrystals with multiple luminescent centers were synthesized by means of a facile sol–gel method. The Nd3+-doped ZnO nanocrystals were characterized by using the X-ray diffraction, transmission electron microscopy, ultraviolet-visible reflectance spectra, and fluorescence spectroscopy. Host-to-Nd3+ energy transfer was observed for the first time in Nd3+-doped ZnO nanocrystals. It was found that Nd3+ ions can be effectively sensitized by the ZnO nanocrystals, resulting in sharp and intense characteristic Nd3+ luminescence. The photoluminescence (PL) and PL excitation spectra of Nd3+ ions in the ZnO nanocrystals were investigated in detail. Furthermore, the possible mechanism of host-to-Nd3+ energy transfer was also proposed on the basis of the optical properties of Nd3+ ions in the ZnO nanocrystals.
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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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