广东工业大学学报 ›› 2010, Vol. 27 ›› Issue (4): 32-35.

• 综合研究 • 上一篇    下一篇

Nax Sr1-2x MoO4:Eux3+的制备及其发光性能的研究

  

  1. 广东工业大学物理与光电工程学院,广东广州510006
  • 出版日期:2010-12-25 发布日期:2010-12-25
  • 作者简介:李享(1988-),女,硕士研究生,主要研究方向为LED荧光材料
  • 基金资助:

    国家自然科学基金资助项目(21071034,20871033)

On the Synthesis of Nax Sr1-2x MoO4:Eux3+and Their Luminescent Properties

  1. Faeudy of Physics and Optoelectronic Engineering,Guangdong University of Technology,Guangzhou 510006,China
  • Online:2010-12-25 Published:2010-12-25

摘要: 采用高温固相法结合电荷补偿方式2Sr 2+→Eu3++Na +,合成了适合白光LED的红色荧光材料Nax Sr1-2x MoO4:Eux3+ ( =0.1、0.15、0.2,0.25、0.3)系列样品.对样品分别进行了x射线衍射(XRD)分析和荧光光谱的测定.测试结果表明,N Sr MoO :Eu: 荧光粉可以被近紫外光(uV)(393 nm)和蓝光(463 nm)有效激发.通过探讨Na+ 和Eu3+ 的掺杂浓度对发光强度的影响,得出Nax Sr1-2x MoO4:Eux3+系列样品的发光强度比SrMoO4:Eu3+明显增加,且当掺杂量 =0.2时,Nax Sr1-2x MoO4:Eux3+列样品在616 nm处的发光强度最大.分析了Nax Sr1-2x MoO4:Eux3+系列样品在380 nm紫外光激发下的色坐标,当Na 和Eu 的掺杂量 =0.15时,样品的红色显色最强.

关键词: Eu3+;红色荧光粉;钼酸盐;电荷补偿;色坐标

Abstract: Nax Sr1-2x MoO4:Eux3+ ( :0.1、0.15、0.2、0.25、0.3)red phosphors for white LEDs were synthesized by using the high temperature solid state reaction and charge compensation.and 2Sr¨ Eu” +Na was studied as well.The samples were characterized by means of X-ray diffraction and photoluminescence spectra.The results indicate that Nax Sr1-2x MoO4Eux3+phosphors can be excited efectively by 393 nm and 463 nln lights.Compared with SrMoO4:Eu3+,the emission intensity of Nax Sr1-2x MoO4:Eux3+is increased obviously.As regards the influence of Eu3+ and Na concentrations on the luminescent property,the highest emission intensity on the 61 6nm is exhibited when is 0.2.Moreover,it analyzes the CIE chromaticity( ,Y)of Nax Sr1-2x MoO4:Eux3+ excited by 380 nm lights.When the doping is 0.15 phosphors of the samples turn from pink to red.

Key words: Eu3+;red phosphor;molybdate;charge compensation;CIE chromaticity

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