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Template-Assemble Synthesis of ZnO:Er Nanostructure and Their Upconversion Luminescence Properties

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ZnO:Er3+ crystallites with controllable morphology of nanorod, columnlike, swordlike, flower-, and prismlike were prepared via the cetyltrimethylammonium bromide (CTAB) assisted hydrothermal process. The effect of the reaction conditions on the morphologies was investigated. A higher concentration of CTAB and/or temperature favor formation of ZnO:Er3+ with larger aspect ratio. When LiOH was used to obtain Zn(OH)2− 4 instead of NaOH, the nanoparticles with smaller aspect ratio was formed due to the different rate determining step. Different solvent also introduced the formation of nanoparticles with different shape as a result of interface-solvent interaction. The different upconversion photoluminescence was observed in different morphology samples under infrared 980 nm excitation, which is causes the variation of the Er3+ local structure.
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Keywords: HYDROTHERMAL; LUMINESCENCE; MORPHOLOGY; NANOSTRUCTURE; RARE EARTH; UPCONVERSION; ZNO:ER3+

Document Type: Research Article

Publication date: 2009-02-01

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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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