Optical characteristics of LiZnVO4 green phosphor at low temperature preparation

Hsiao, Yu-Jen and Chai, Yin-Lai and Ji, Liang-Wen and Fang, Te-Hua and Meen, Teen-Hang and Tsai, Jenn-Kai and Chen, Kan-Lin and Prior, Stephen D. (2012) Optical characteristics of LiZnVO4 green phosphor at low temperature preparation. Materials Letters, 70 . pp. 163-166. ISSN 0167-577X

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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 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.

Item Type: Article
Additional Information: LiZnVO4 microcrystals were successful prepared by a vibrating milled solid-state reaction. ► Pure rhombohedral LiZnVO4 crystals can be obtained by heat treatment at above 500°C. ► The visible light absorption edge of the sample prepared at 500°C was found to be at 413 nm, which corresponded to a band-gap energy of 3.0 eV.
Keywords (uncontrolled): Luminescence; LiZnVO4 oxides; Optical materials and properties
Research Areas: A. > School of Science and Technology
ISI Impact: 0
Item ID: 8285
Notes on copyright: Copyright © 2011 Elsevier B.V. All rights reserved. Author can archive pre-print and post-print.
Depositing User: Dr Stephen Prior
Date Deposited: 11 Jan 2012 05:17
Last Modified: 05 Oct 2015 06:45
URI: http://eprints.mdx.ac.uk/id/eprint/8285

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