Journal
JOURNAL OF LUMINESCENCE
Volume 122, Issue -, Pages 87-90Publisher
ELSEVIER
DOI: 10.1016/j.jlumin.2006.01.105
Keywords
phosphor; Li-doped Y2-xGdxO3 : Eu3+; photoluminescence
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Y2-xGdxO3:Eu3+ and Li-doped Y(2-x)GdxO(3):Eu3+ ceramics were synthesized by using a solid state reaction method. The crystallinity and photoluminescence of ceramics were highly dependent on Li-doping and the amount of Gd content. The mixed crystalline phase of Y2O3 and Gd2O3 was observed at Y2-xGdxO3:Eu3+ ceramics, but the Gd-substituted Y2O3 phase becomes more dominant at Li-doped Y2-xGdxO3:Eu3+ ceramics. Comparing to Y2-xGdxO3:Eu3+ powders, the intensity of the peak at 611 nm for the Li-doped Y2-xGdxO3:Eu3+ powders was increased by a factor of 1.85 and 1.44 at 14 and 300 K, respectively. The Li+-doping effectively enhanced not only the crystallinity but also the luminescent brightness of Y2-xGdxO3:Eu3+ ceramics. (c) 2006 Elsevier B.V. All rights reserved.
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