Optical characteristics of LiZnVO4 green phosphor at low temperature preparation
Hsiao, Yu-Jen, Chai, Yin-Lai, Ji, Liang-Wen, Fang, Te-Hua, Meen, Teen-Hang, Tsai, Jenn-Kai, Chen, Kan-Lin and Prior, Stephen D. (2012) Optical characteristics of LiZnVO4 green phosphor at low temperature preparation. Materials Letters, 70, 163-166. (doi:10.1016/j.matlet.2011.11.076).
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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 355 nm. The photoluminescence results reveal that the sample prepared at 500 °C exhibits a broad and strong bluish green emission peaks at about 526 nm compared with other samples. Furthermore, the visible light absorption edge of the LiZnVO4 annealed at 500 °C was located at 413 nm, which corresponded to band-gap energy of 3.0 eV.
|Additional Information:||The main purpose of this work was to explore a mixed oxide synthetic route for the production of LiZnVO4 powders via a rapid vibro-milling technique. The rapid vibro-milling technique was employed for investigating the potentiality of obtaining nano-sized powders, which would in turn lead to a lower required firing temperature. The phase formation, morphology, and luminescence properties of LiZnVO4 oxides calcined at various conditions are studied in the paper. This paper is the first attempt to provide a vibrating milled solid-state reaction method for LiZnVO4 nanoparticles of manufacturing processes.|
|Keywords:||luminescence, LiZnVO4 oxides, optical materials and properties|
|Subjects:||Q Science > QC Physics
T Technology > TP Chemical technology
|Divisions:||Faculty of Engineering and the Environment
|Date Deposited:||11 Sep 2012 15:44|
|Last Modified:||27 Mar 2014 20:24|
|RDF:||RDF+N-Triples, RDF+N3, RDF+XML, Browse.|
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