Abstract
Nanoparticles of sodium lanthanum (III) fluoride-doped and co-doped with Eu3+/Tb3+ were prepared by the hydrothermal method using citric acid as structure-directing agent. Structural aspects and optical properties of synthesized nanoparticles were studied by powder X-ray diffraction (XRPD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), selected area electron diffraction (SAED), energy-dispersive X-ray spectra (EDS), particle size by dynamic light scattering (DLS), Fourier transform infrared (FTIR) spectrum and photoluminescence (PL) techniques. Nanoparticles consist of well-crystallized hexagonal phase and the average crystallite size for undoped and doped-NaLaF4 nanoparticles are in the range of 20–22 nm. TEM images show that nanoparticles have cylindrical shape and crystalline nature of nanoparticles was confirmed by SAED patterns. Down- conversion (DC) luminescent properties of doped NaLaF4 were also investigated and impact of co-doping has been explored.
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Acknowledgements
We would like to acknowledge Indian Institute of Technology Roorkee and Indian Institute of Technology Guwahati for their technical support. We also thank School of Physics, Shri Mata Vaishno Devi University (SMVDU) for photoluminescence studies.
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LADOL, J., KHAJURIA, H., KHAJURIA, S. et al. Hydrothermal synthesis, characterization and luminescent properties of lanthanide-doped NaLaF4 nanoparticles. Bull Mater Sci 39, 943–952 (2016). https://doi.org/10.1007/s12034-016-1225-8
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DOI: https://doi.org/10.1007/s12034-016-1225-8