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In-Dopants Effect on the Photoluminescence Properties of YVO4 Nanophosphors

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The powders of Yttrium vanadate (YVO4) with In-dopants were synthesized by solid-state reactions, and X-ray diffraction (XRD), transmission electron microscopy (TEM), ultraviolet-visible (UV-vis) absorption spectra, photoluminescence (PL) spectra, and the luminescence intensity change were used to characterize the samples. The results of XRD indicated that the YVO4:In3+ samples remained in pure cubic phase. TEM illustrated that the powders mainly consisted of grains with an average size of 100 nm. Under the excitation of 320 nm, the YVO4:In3+ single-crystalline samples exhibited emission ranging from 350 to 700 nm. The emission intensity of YVO4:In3+ increased with increasing indium concentration in the lower indium concentration region until the saturated PL intensity was reached, and the strongest white fluorescence was observed when the In3+ doping concentration was 2% at 900 °C. The luminescent intensity of YVO4:In3+ (2%) was 9.6 times as strong as that of non-doped YVO4. The nanophosphors emit white luminescence owing to broad charge transfer in crystal lattice is due to the addition of In3+ to capture the UV radiation.


Document Type: Research Article


Publication date: March 1, 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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