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首页> 外文期刊>RSC Advances >Design, synthesis and characterization of a novel bluish-green long-lasting phosphorescence phosphor BaLu2Si3O10:Eu2+, Nd3+
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Design, synthesis and characterization of a novel bluish-green long-lasting phosphorescence phosphor BaLu2Si3O10:Eu2+, Nd3+

机译：新型蓝绿色长持续磷光磷Balu2Si3O10的设计，合成和表征：Eu2 +，ND3 +

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摘要

Through drawing upon a solid-state reaction, a newly proposed long-lasting phosphor BaLu2Si3O10:Eu2+, Nd3+ is presented and prepared in this work. The thermoluminescence properties of the phosphor are substantially extended, and the long-lasting phosphorescence behavior is markedly intensified by virtue of the consolidation of Nd3+ ions which serve as trap centers. In line with density functional theory calculations, the conduction band is mostly composed of Lu 5d states while the Ba 5d states only have a tiny contribution. We analyzed the relationship between the phosphor's electronic structure and its optical properties. The photoluminescence emission spectrum shows a blue emitting band with a wide asymmetric property and an extremum of 426 nm, arising from the 5d-4f transitions of the Eu2+ ions which occupy the Ba and Lu sites. It is asserted that the long-lasting phosphorescence of the Eu2+ ions which take up both Ba and Lu sites stems from the special form of conduction band and the occupying environment of the emission center. Yet, they have different contributions and induce an interesting phenomenon in which the blue emitting phosphor shows a bluish-green phosphorescence. The long-lasting phosphorescence can last in excess of 6 h at the recognized intensity level (0.32 mcd m(-2)) after excitation for 10 min. This work provides a new way of thinking for the development of multicolored LLP materials. This work analyzes and sheds light on the specific courses and provides a likely mechanism for the process.
机译：通过拉伸固态反应，在这项工作中提出和制备了新提出的长持续的磷光体Balu2Si3O10：Eu2 +，ND3 +。磷光体的热致发光性质基本上延伸，并且借助于将作为捕集中心的Nd3 +离子的固结性显着强化持久的磷光行为。符合密度函数理论计算，传导频段主要由Lu 5d状态组成，而BA 5D状态仅具有微小的贡献。我们分析了荧光粉电子结构与其光学性质之间的关系。光致发光发射光谱显示出具有宽不对称性的蓝色发光带和426nm的极值，由占据BA和LU位点的EU2 +离子的5D-4F转变产生。据称，占用BA和LU位点的EU2 +离子的长持久磷光源自传导中心的特殊形式和占据环境的占据环境。然而，它们具有不同的贡献，诱导了一种有趣的现象，其中蓝色发光磷光体显示出蓝绿磷光。在激发10分钟后，长持久的磷光可以在公认的强度水平（0.32mcd m（-2））上过量超过6小时。这项工作提供了一种新的思维方式，用于开发多彩多姿的LLP材料。这项工作分析并阐明了特定课程，并为该过程提供了可能的机制。

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  • 来源
    《RSC Advances》 |2018年第19期|共9页
  • 作者

    Liu Jie; Li Gen; Guo Haijie; Liu Dongwei; Feng Peng; Wang Yuhua;

  • 作者单位

    Lanzhou Univ Sch Phys Sci &

    Technol Dept Mat Sci Lanzhou 730000 Gansu Peoples R China;

    Lanzhou Univ Sch Phys Sci &

    Technol Dept Mat Sci Lanzhou 730000 Gansu Peoples R China;

    Lanzhou Univ Sch Phys Sci &

    Technol Dept Mat Sci Lanzhou 730000 Gansu Peoples R China;

    Lanzhou Univ Sch Phys Sci &

    Technol Dept Mat Sci Lanzhou 730000 Gansu Peoples R China;

    Lanzhou Univ Sch Phys Sci &

    Technol Dept Mat Sci Lanzhou 730000 Gansu Peoples R China;

    Lanzhou Univ Sch Phys Sci &

    Technol Dept Mat Sci Lanzhou 730000 Gansu Peoples R China;

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  • 正文语种 eng
  • 中图分类 化学;
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