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Synthesis of Eu -Activated La_2Mo_2O_9 Powder Phosphors by Surfactant- Assisted Hydrothermal Approach

机译:表面活性剂辅助水热法合成Eu活化La_2Mo_2O_9粉末荧光粉。

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摘要

The red-emitting fine La_2Mo_2O_9:Eu~(3+) powder phosphors have been successfully synthesized using surfactant-assisted hydro-thermal approach. After the addition of certain amounts of surfactant (polyethylene glycol, abbreviated as PEG) into the process, both the morphology and photoluminescence property of the phosphors were improved. The powder phosphors were fine (~1 μim) and mono-dispersive in appearance, and showed a strong red emission h'ne at 615 nm under the excitation of blue light at 465 nm. As the molar ratio of n(PEG)(La+Eu) was adjusted to 1:1, the sample exhibited the optimum emission intensity, which reached about threefold in comparison with that of the identical composition sample prepared by conventional solid-state reaction. The fine powder phosphors may be potential candidates as red-emitting materials for white LED applications.
机译:采用表面活性剂辅助水热法成功合成了红色的La_2Mo_2O_9:Eu〜(3+)粉状荧光粉。在工艺中加入一定量的表面活性剂(聚乙二醇,缩写为PEG)后,荧光粉的形貌和光致发光性能均得到改善。粉末荧光粉细(〜1μim),外观单分散,在465 nm的蓝光激发下,在615 nm处显示出很强的红色发射光。将n(PEG)/ n(La + Eu)的摩尔比调整为1:1时,样品表现出最佳发射强度,与传统固态制备的相同组成样品相比,发射强度达到了约三倍反应。细粉磷光体可以作为用于白光LED应用的红色发光材料的潜在候选者。

著录项

  • 来源
    《Journal of the American Ceramic Society》 |2012年第12期|3878-3882|共5页
  • 作者单位

    College of Chemistry & Materials Science, Hebei Normal University, Shijiazhuang 050024, China;

    College of Chemistry & Materials Science, Hebei Normal University, Shijiazhuang 050024, China;

    College of Chemistry & Materials Science, Hebei Normal University, Shijiazhuang 050024, China;

    College of Chemistry & Materials Science, Hebei Normal University, Shijiazhuang 050024, China;

    State Key Laboratory of New Ceramics and Fine Processing, Tsinghua University, Beijing 100084, China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
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  • 入库时间 2022-08-17 13:39:02

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