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首页> 外文期刊>RSC Advances >Strongly enhanced luminescence of Sr4Al14O25:Mn4+ phosphor by co-doping B3+ and Na+ ions with red emission for plant growth LEDs
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Strongly enhanced luminescence of Sr4Al14O25:Mn4+ phosphor by co-doping B3+ and Na+ ions with red emission for plant growth LEDs

机译：通过共同掺杂B3 +和Na +离子对植物生长LED进行红色发射的强烈增强的SR4AL14O25：MN4 +磷光体的发光

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摘要

Development of a more cost-effective radiation source for use in plant-growing facilities would be of significant benefit for commercial crop production applications. A series of co-doped B3+ and Na+ ions Sr4Al14O25:Mn4+ inorganic luminescence materials which can be used for plant growth were successfully synthesized through a conventional high-temperature solid-state reaction. Powder X-ray diffraction was used to confirm the crystal structure and phase purity of the obtained samples. Then scanning electron microscopy elemental mapping was undertaken to characterize the distribution of the doped ions. Detail investigations on the photoluminescence emission and excitation spectra revealed that emission intensity of tetravalent manganese ions can be well enhanced by monovalent sodium ions and trivalent boron ions under near-ultraviolet and blue excitation. Additionally, crystal field parameters and energies of states are calculated and discussed in detail. Particularly we achieve a photoluminescence internal quantum yield as high as 60.8% under 450 nm blue light excitation for Sr4Al14O25:Mn4+, Na+, B3+. Therefore, satisfactory luminescence properties make these phosphors available to LEDs for plant growth.
机译：在植物生长设施使用更具成本效益的辐射源的发展将是商业作物生产应用显著的好处。一系列共掺杂B3 +和Na +的离子Sr4Al14O25：4+，其可用于植物生长的无机发光材料通过传统的高温固相反应成功地合成。粉末X射线衍射来证实所得到的试样的晶体结构和相纯度。然后扫描电子显微镜元素映射被承担以表征掺杂离子的分布。在光致发光发射光谱和激发光谱详细调查显示四价的锰离子的该发光强度可通过一价钠离子和三价硼离子下近紫外和蓝色激发以及增强。此外，晶体场参数和状态的能量被计算，并在详细地讨论。特别是我们实现下450nm的蓝色光激发用于Sr4Al14O25的光致发光的内部量子产率高达60.8％：4+，钠+，B3 +。因此，令人满意的发光性能使这些荧光粉提供给LED用于植物生长。

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  • 来源
    《RSC Advances》 |2018年第3期|共8页
  • 作者

    Long Jiaqi; Yuan Xuanyi; Ma Chaoyang; Du Miaomiao; Ma Xiaoli; Wen Zicheng; Ma Ran; Wang Yuzhen; Cao Yongge;

  • 作者单位

    Renmin Univ China Dept Phys Beijing Key Lab Optoelect Funct Mat &

    Micronano D Beijing 100872 Peoples R China;

    Renmin Univ China Dept Phys Beijing Key Lab Optoelect Funct Mat &

    Micronano D Beijing 100872 Peoples R China;

    Renmin Univ China Dept Phys Beijing Key Lab Optoelect Funct Mat &

    Micronano D Beijing 100872 Peoples R China;

    Renmin Univ China Dept Phys Beijing Key Lab Optoelect Funct Mat &

    Micronano D Beijing 100872 Peoples R China;

    Renmin Univ China Dept Phys Beijing Key Lab Optoelect Funct Mat &

    Micronano D Beijing 100872 Peoples R China;

    Renmin Univ China Dept Phys Beijing Key Lab Optoelect Funct Mat &

    Micronano D Beijing 100872 Peoples R China;

    Renmin Univ China Dept Phys Beijing Key Lab Optoelect Funct Mat &

    Micronano D Beijing 100872 Peoples R China;

    Renmin Univ China Dept Phys Beijing Key Lab Optoelect Funct Mat &

    Micronano D Beijing 100872 Peoples R China;

    Renmin Univ China Dept Phys Beijing Key Lab Optoelect Funct Mat &

    Micronano D Beijing 100872 Peoples R China;

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  • 正文语种 eng
  • 中图分类 化学;
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