Journal
JOURNAL OF LUMINESCENCE
Volume 122, Issue -, Pages 984-986Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jlumin.2006.01.345
Keywords
photolumincscence; Gd2O3 : Eu; Hf doping; interstitial oxygen
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This work presents the effects of Hf doping on structure and spectroscopic properties of Gd2O3:Eu phosphors. It was found that the lattice of Gd2O3:Eu phosphors transforms from monoclinic to cubic when the Hf4+ ions are doped, and cell sizes decrease with the increase of Hf-doping level. The phosphors showed decreased photoluminescence intensity after Hf4+ doping. Competitive absorption of interstitial oxygen and local symmetry of Eu3+ sites are proposed for such a decrease. (c) 2006 Elsevier B.V. All rights reserved.
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