A novel rock-like nanoarchitecture of YVO4:Eu3+ phosphor: selective synthesis, characterization, and luminescence behavior
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A facile, surfactant-mediated strategy involving ‘oriented attachment’ assisted self-assembly of rice-like and grape-like nanostructures resulted into a novel encapsulated rock-like luminescent YVO4:Eu3+ nanoarchitecture in aqueous medium. It is shown that a characteristic crystallization behavior of YVO4:Eu3+ leads to the growth of a rice-like shape in a template-free reaction system. In presence of a surfactant, these rice-like structures in the vicinity of the micellar head groups self-assemble to form nanograpes and ultimately produce rock-like nanostructures upon prolonged autoclaving. The rock-like nanocrystalline phosphors, having an average area of 2798 nm2, are composed of an inner nucleus and a surrounding shell-like cover, as evidenced from the transmission electron microscopy images. Finally, the room temperature photoluminescence spectra demonstrate that the morphology of the nanophosphors has immense influence on their chromaticity.
KeywordsTetragonal Phase HRTEM Image Cetyl Trimethyl Ammonium Bromide Selective Area Electron Diffraction Pattern YVO4
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