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Phase Evolution and Photoluminescence of Eu3+-Doped ZrO2

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Eu3+ doped ZrO2 nanocrystals were prepared by decanoic acid-assisted hydrothermal method. X-ray diffraction, transmission electron microscope, Fourier transform infrared spectroscopy, Ultraviolet-visible diffuse reflection spectroscopy, and photoluminescence spectra were used to characterize the phase evolution, morphology, surface species, and optical properties of the samples. At low Eu3+ content, monoclinic ZrO2 was achieved to show a rod-like morphology. With increasing the Eu3+ content, tetragonal ZrO2 nanocrystals were obtained to show a ball-like shape. Decanoic acid molecules were decorated on the surfaces of ZrO2 nanocrystals, which gave rise to a typical absorption centered at 300 nm. In addition to the characteristic emission of Eu3+, an intense broad emission was detected for pure and Eu3+-doped ZrO2 nanocrystals under ultraviolet excitation, which is interpreted in terms of the F/F+ and/or AOD+ centers that are related with the oxygen vacancies.
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Document Type: Research Article

Publication date: 01 March 2010

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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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