Photoluminescence characteristics of ZnO doped with Eu3+ powders


Fang, Te-Hua, Chang, Yee-Shin, Ji, Liang-Wen, Prior, Stephen D., Water, Walter, Chen, Kuan-Jen, Fang, Ching-Feng, Fang, Chun-Nan and Shen, Siu-Tsen (2009) Photoluminescence characteristics of ZnO doped with Eu3+ powders. Journal of Physics and Chemistry of Solids, 70, (6), 1015-1018. (doi:10.1016/j.jpcs.2009.05.012).

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Description/Abstract

In this work, we have investigated the photoluminescence spectra of europium-doped zinc oxide crystallites prepared by a vibrating milled solid-state reaction method. X-ray diffraction, scanning electron microscopy, luminescence spectra and time-resolved spectra analysis were used to characterize the synthetic ZnO:Eu3+ powders. XRD results of the powders showed a typical wurtzite hexagonal crystal structure. A second phase occurred at 5 mol% Eu2O3-doped ZnO. The 5D0–7F1 (590 nm) and 5D0–7F2 (609 nm) emission characteristics of Eu3+ appeared after quenching with more than 1.5 mol% Eu2O3 doping. The Commission Internationale d’Eclairage (CIE) chromaticity coordinates of a ZnO:Eu3+ host excited at λex=467 nm revealed a red-shift phenomenon with increase in Eu3+ ion doping. The lifetime of the Eu3+ ion decreased as the doping concentration was increased from 1.5 to 10 mol%, and the time-resolved 5D0→7F2 transition presents a single-exponential decay behavior

Item Type: Article
Additional Information: Commercial materials like europium (Eu) ion have a good effect of light-emitting to change its luminous effect by control of the host lattice. It is an excellent element for light-emitting center. In this work, we have investigated the photoluminescence spectra of europium-doped zinc oxide crystallites prepared by a vibrating milled solid-state reaction method. Effects of Eu doping on the structural, topographical and luminescent properties are discussed. The Commission Internationale d'Eclairage (CIE) chromaticity coordinates of a ZnO:Eu3+ host excited at lambda(ex) = 467 nm revealed a red-shift phenomenon with increase in Eu3+ ion doping. The lifetime of the Eu3+ ion decreased as the doping concentration was increased from 1.5 to 10 mol%, and the time-resolved D-5(0)-> F-7(2) transition presents a single-exponential decay behavior.
ISSNs: 0022-3697 (print)
Subjects: Q Science > Q Science (General)
Divisions: Faculty of Engineering and the Environment > Aeronautics, Astronautics and Computational Engineering
ePrint ID: 343532
Date Deposited: 04 Oct 2012 09:12
Last Modified: 27 Mar 2014 20:25
URI: http://eprints.soton.ac.uk/id/eprint/343532

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