Optical characteristics of LiZnVO4 green phosphor at low temperature preparation

Abstract: Photoluminescence characterization of LiZnVO4 oxides by the vibrating milled solid-state reaction was investigated in this work. The products were characterized by X-ray diffraction, scanning electron microscopy, photoluminescence spectroscopy and absorption spectra. The excitation wavelengths associated with charge transfer bands of [VO4]3− are located at 355nm. The photoluminescence results reveal that the sample prepared at 500°C exhibits a broad and strong bluish green emission peaks at about 526nm compared with other samples. Furthermore, the visible light absorption edge of the LiZnVO4 annealed at 500°C was located at 413nm, which corresponded to band-gap energy of 3.0eV. [Copyright &y& Elsevier]