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首页> 外文期刊>Advanced Functional Materials >Synthesis of Luminescent ZrO_2:Eu~(3+) Nanoparticles and Their Holographic Sub-Micrometer Patterning in Polymer Composites
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Synthesis of Luminescent ZrO_2:Eu~(3+) Nanoparticles and Their Holographic Sub-Micrometer Patterning in Polymer Composites

机译：发光ZrO_2：Eu〜（3+）纳米粒子的合成及其在聚合物复合材料中的全息亚微米构图

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摘要

Here, the facile synthesis of fluorescent ZrO_2:Eu~(3+) nanoparticles with luminescence quantum yield of up to 8.7% that can be easily dispersed in organic solvents and utilized for the preparation of organic/inorganic volume holographic gratings is presented. The nanoparticles are prepared through a one-step solvothermal process resulting in spherical particles with a mean size of 4nm that were highly crystalline directly after the synthesis, without any need for calcination treatment. Detailed luminescence studies of the nanoparticles as a function of Eu~(3+) content demonstrate that the dopant concentration and its site symmetry play an important role in the emissive properties and lifetime of the luminescent centers. It is shown that the luminescence quantum yield of the colloidal ZrO_2:Eu~(3+) nanoparticles increases with dopant concentration up to a critical concentration of 11 mol% while the luminescence lifetime is shortened from 1.8 to 1.4 ms. Holographic photopolymerization of suitable monomer mixtures containing the luminescent nanoparticles demonstrated the ability to inscribe volume Bragg gratings (refractive index contrast n_1 up to 0.011) with light-emissive properties, evidencing the high suitability of this approach for the fabrication of tailored nanomaterials for elaborate and demanding applications.
机译：在这里，提出了容易合成的荧光ZrO_2：Eu〜（3+）纳米粒子，其发光量子产率高达8.7％，可以容易地分散在有机溶剂中，并用于制备有机/无机体积全息光栅。纳米颗粒通过一步溶剂热法制备，得到平均粒径为4nm的球形颗粒，该颗粒在合成后立即高度结晶，无需进行煅烧处理。纳米颗粒作为Eu〜（3+）含量的函数的详细发光研究表明，掺杂剂的浓度及其位点对称性在发光中心的发光特性和寿命中起着重要作用。结果表明，随着掺杂浓度的增加，胶体ZrO_2：Eu〜（3+）纳米粒子的发光量子产率提高到11 mol％的临界浓度，发光寿命从1.8 ms缩短到1.4 ms。包含发光纳米粒子的合适单体混合物的全息光致聚合显示了能够刻写具有光发射特性的体积布拉格光栅（折射率对比度n_1高达0.011）的能力，证明了这种方法非常适合制造精细而苛刻的量身定制的纳米材料。应用程序。

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  • 来源
    《Advanced Functional Materials》 |2009年第11期|1819-1825|共7页
  • 作者

    Tsedev Ninjbadgar; Georg Gamweitner; Alexander Boerger; Leonid M. Goldenberg; Oksana V. Sakhno; Joachim Stumpe;

  • 作者单位

    TU Braunschweig, Institute for Particle Technology Volkmaroder Str. 5, 38104 Braunschweig (Germany);

    TU Braunschweig, Institute for Particle Technology Volkmaroder Str. 5, 38104 Braunschweig (Germany);

    TU Braunschweig, Institute for Physical and Theoretical Chemistry Hans-Sommer-Str. 10, 38106 Braunschweig (Germany);

    Institute of Thin Film Technology and Microsensorics Kantstr. 55, 14513 Teltow (Germany);

    Institute of Thin Film Technology and Microsensorics Kantstr. 55, 14513 Teltow (Germany);

    Fraunhofer Institute for Applied Polymer Research Research Campus Golm, 14476 Potsdam (Germany);

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