Journal
JOURNAL OF LUMINESCENCE
Volume 122, Issue -, Pages 168-171Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jlumin.2006.01.076
Keywords
zinc oxide films; europium ions; oriented growth; luminescence
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A series of Eu3+-doped ZnO films have been prepared by a sol-gel method. These films were characterized by X-ray diffraction (XRD) and photoluminecent spectra (PL). Effects of synthetic parameters, such as annealing atmosphere, temperature and concentration of doped ions, on the highly oriented crystal growth were studied in detail. The crystalline structures of films annealed in vacuum have a wurtzite symmetry with highly c-axis orientation. A characteristic D-5(0) -> F-7(J)(J = 1, 2, 3 and 4) red emission is observed due to energy transfer from the ZnO host to the doped Eu3+ in the c-oriented ZnO films. (c) 2006 Elsevier B.V. All rights reserved.
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