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Photoluminescent properties of Sr2SiO4:Eu3+ and Sr2SiO4:Eu2+ phosphors prepared by solid-state reaction method

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【作者】 乔艳敏； 张鑫博； 叶晓； 陈艳； 郭海；

【Author】 QIAO Yanmin 1, ZHANG Xinbo 1, YE Xiao 1, CHEN Yan 1, GUO Hai 1, 2 (1. Department of Physics, Zhejiang Normal University, Jinhua 321004, China; 2. Zhejiang Key Laboratory for Reactive Chemistry on Solid Surfaces, Institute of Physical Chemistry, Zhejiang Normal University, Jinhua 321004, China)

【机构】 Department of Physics,Zhejiang Normal University,Jinhua 321004,China； Zhejiang Key Laboratory for Reactive Chemistry on Solid Surfaces,Institute of Physical Chemistry,Zhejiang Normal University,Jinhua 321004,China；

【摘要】 Eu2+ and (or) Eu3+ doped Sr2SiO4 phosphors particles were synthesized by a conventional solid-state reaction technique, and their structural and optical properties were investigated. The X-ray diffraction (XRD) results showed that the obtained phosphors were composed of orthorhombic α’-Sr2SiO4 and monoclinic β-Sr2SiO4 phase. When excited under 256 nm, Sr2SiO4:Eu3+ phosphors showed intense emission in the red region. Sr2SiO4:Eu3+ phosphors exhibited white emissions (x=0.30, y=0.40, TC=6500 K) ranging from 425 to 650 nm when it was excited by near-ultraviolet (near-UV) light, indicating that Sr2SiO4:Eu2+ was a good light-conversion phosphor candidate for near-UV chip.

【Abstract】 Eu2+ and (or) Eu3+ doped Sr2SiO4 phosphors particles were synthesized by a conventional solid-state reaction technique, and their structural and optical properties were investigated. The X-ray diffraction (XRD) results showed that the obtained phosphors were composed of orthorhombic α’-Sr2SiO4 and monoclinic β-Sr2SiO4 phase. When excited under 256 nm, Sr2SiO4:Eu3+ phosphors showed intense emission in the red region. Sr2SiO4:Eu3+ phosphors exhibited white emissions (x=0.30, y=0.40, TC=6500 K) ranging from 425 to 650 nm when it was excited by near-ultraviolet (near-UV) light, indicating that Sr2SiO4:Eu2+ was a good light-conversion phosphor candidate for near-UV chip.

【关键词】 Sr2SiO4:Eu2+； white light-emitting diodes (LED)； rare earths；
【Key words】 Sr2SiO4:Eu2+； white light-emitting diodes (LED)； rare earths；
【基金】 supported by the grants from the Natural Science Foundation of Zhejiang Province (Y406309);Research Program from Science and Technology Bureau of Jinhua City (2008-1-151)
  • 【文献出处】 Journal of Rare Earths ,稀土学报(英文版) , 编辑部邮箱 ,2009年02期
  • 【分类号】O614.338
  • 【被引频次】47
  • 【下载频次】286
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