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An investigation of Eu~(2+)-doped CaAlSiN_3 fabricated by an alloy-nitridation method

机译：合金氮化法制备Eu〜（2+）掺杂CaAlSiN_3的研究

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摘要

We have synthesized CaAlSiN_3:Eu phosphors through an alloy-nitridation method with stable alloys as main starting materials, and investigated their crystal structures and photoluminescence properties in three aspects as below: (1) different Eu concentrations; (2) different Eu dopants; (3) different Al/Si molar ratios. The lattice volume calculated by using Rietveld refinement on the base of XRD analysis, decreases with oxygen incorporating, increases with the Al/Si ratios, and shows a limited expansion with the raise of Eu concentrations in CaAlSiN_3:Eu crystal lattice. The concentration quenching and the shifts of emission bands are investigated and discussed in details. The different lattice volumes deriving from corresponding compositions have an important effect on photoluminescence properties. This work provides some methods to tune the emission wavelengths of CaAlSiN_3:Eu phosphors.
机译：以稳定合金为主要原料，采用合金氮化方法合成了CaAlSiN_3：Eu荧光粉，并从以下三个方面研究了其晶体结构和光致发光性能。 （2）不同的Eu掺杂剂； （3）不同的Al / Si摩尔比。在XRD分析的基础上，使用Rietveld精炼计算出的晶格体积，随着氧的引入而减少，随Al / Si比的增加而增加，并且随着CaAlSiN_3：Eu晶格中Eu浓度的增加而显示出有限的膨胀。浓度猝灭和发射带的移动进行了研究和讨论。衍生自相应组成的不同晶格体积对光致发光性质具有重要影响。这项工作提供了一些方法来调整CaAlSiN_3：Eu磷光体的发射波长。

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  • 来源
    《Materials Science and Engineering》 |2012年第18期|p.1596-1604|共9页
  • 作者

    Jianjun Yang; Ting Wang; Dongchuan Chen; Guodong Chen; Quanlin Liu;

  • 作者单位

    School of Materials Science & Engineering and State Key Laboratory for Advanced Metals and Materials. University of Science and Technology Beijing, Beijing 100083, China;

    School of Materials Science & Engineering and State Key Laboratory for Advanced Metals and Materials. University of Science and Technology Beijing, Beijing 100083, China;

    School of Materials Science & Engineering and State Key Laboratory for Advanced Metals and Materials. University of Science and Technology Beijing, Beijing 100083, China;

    School of Materials Science & Engineering and State Key Laboratory for Advanced Metals and Materials. University of Science and Technology Beijing, Beijing 100083, China;

    School of Materials Science & Engineering and State Key Laboratory for Advanced Metals and Materials. University of Science and Technology Beijing, Beijing 100083, China;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    CaAlSiN_3; Eu~(2+) doped; crystal structure; luminescence; wavelength tune;

    机译：CaAlSiN_3;Eu〜（2+）掺杂;晶体结构发光波长调谐;

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