Shape Controlled Synthesis and Photoluminescence Properties of Eu3+-Doped REVO4 Nanophosphors
Eu3+-doped REVO4 nanphosphors were controllably synthesized by an EDTA-mediated hydrothermal method at 180 °C using RE(NO3)3 and Na3VO4 as precursors. The obtained products were characterized by X-ray powder diffraction (XRD), scanning electron microscopy (SEM), Fourier transform infrared spectrometry (FTIR), X-ray photoelectron spectra (XPS), and photoluminescence spectroscopy (PL). The XRD results showed that the products were pure tetragonal structure and no other impurity phase appeared. The PL studies demonstrated Eu3+ ions doping effectively enhanced luminescent properties of La x RE1−x VO4 and Y x RE1−x VO4 nanoparticles, but Eu3+ ions doping did not enhance luminescent properties of Ce x RE1−x VO4 (x ≠ 0) nanoparticles. The prepared phosphors showed well-defined red luminescence due to radiative transitions from 5D0 to 7F J (J = 1, 2) levels of Eu3+ ions, respectively. Furthermore, we reported Eu3+-doped Ce x RE1−x VO4 (x ≠ 0) phases represented a new class of optically inactive materials.
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Document Type: Research Article
Publication date: 2011-11-01
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