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Hydrothermal Synthesis and Photoluminescence of Eu2−xSmxSn2O7 (x = 0–2.0) Nanophosphors

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Abstract:

Eu2–xSmxSn2O7 (x = 0, 0.1, 0.5, 1.0, 1.5, and 2.0) solid solutions were successfully synthesized by a simple, mild hydrothermal process. The crystal structure, particle size, and chemical composition of the solid solutions were characterized by X-ray diffraction, transmission electron microscopy, and energy dispersive X-ray spectroscopy. X-ray diffraction patterns and transmission electron microscopy images reveal that all the products were cubic pyrochlore-type Eu2–xSmxSn2O7 nano-crystals with the diameter of ∼20 nm. Due to efficient energy transfer from Sm3+ to Eu3+, the Eu2–xSmxSn2O7 (x = 0.1, 0.5, 1.0, and 1.5) nanocrystals exhibited strong 5D07F1 photoluminescence emission of Eu3+. The dominant 5D07F1 transition revealed good monochromaticity and low distortion of the Eu2–xSmxSn2O7 nanophosphors.

Keywords: HYDROTHERMAL METHOD; NANOPHOSPHORS; RARE EARTH STANNATES

Document Type: Research Article

DOI: http://dx.doi.org/10.1166/jnn.2008.358

Publication date: March 1, 2008

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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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