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| Naji, M. |
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| Ertürk, Emre |
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Nagirnyi, Vitali
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Publications (2/2 displayed)
- 2014Revised crystal structure and luminescent properties of gadolinium oxyfluoride Gd<inf>4</inf>O<inf>3</inf>F<inf>6</inf> doped with Eu<sup>3+</sup> ionscitations
- 2013Hydrothermal synthesis and structural and spectroscopic properties of the new triclinic form of GdBO<inf>3</inf>:Eu<sup>3+</sup> nanocrystalscitations
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article
Hydrothermal synthesis and structural and spectroscopic properties of the new triclinic form of GdBO<inf>3</inf>:Eu<sup>3+</sup> nanocrystals
Abstract
<p>Triclinic Gd<sub>1-x</sub>Eu<sub>x</sub>BO<sub>3</sub> nanophosphors have been prepared by a hydrothermal method without using additional coreagents and prior precipitation of precursor (in situ). The formation of the borate nanorods and their crystal structure was refined on the basis of X-ray diffraction patterns (XRD) and well confirmed using various techniques such as infrared spectroscopy (IR), Raman spectroscopy, transmission electron microscopy (TEM), and energy-dispersive X-ray spectroscopy (EDX). The new triclinic crystal structure (space group P1⋯) for the GdBO<sub>3</sub> nanocrystals and detailed structure parameters were determined with the help of the Rietveld analysis. The spectroscopic characteristics of the synthesized nanomaterials with different concentrations of Eu<sup>3+</sup> ions were defined with the use of luminescence excitation spectra as well as emission spectra and decay kinetics. The Judd-Ofelt parameters (Ω<sub>2</sub>, Ω<sub>4</sub>) and quantum efficiency, η, were also calculated for the more detailed analysis of Eu<sup>3+</sup> spectra in the GdBO<sub>3</sub> host. © 2013 American Chemical Society.</p>