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首页> 外文学位 >Synthesis and luminescence properties of core-shell structured (lanthanum(1-x)europium(x))(2)zirconium heptoxid[at]yttrium orthoborate spherical nanoparticles.
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Synthesis and luminescence properties of core-shell structured (lanthanum(1-x)europium(x))(2)zirconium heptoxid[at]yttrium orthoborate spherical nanoparticles.

机译：核-壳结构的（he（x）镧（1-x）eur（x））（2）氧化锆原硼酸钇球形纳米颗粒的合成和发光特性。

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摘要

Many rare earth compounds have photoluminescent characteristics for various important applications. In this study, europium doped La2Zr 2O7 nanoparticles were first synthesized morphology-controllably by using a molten-salt synthesis method. These nanoparticles were used as the core for coating with YBO3 shell. We then explored the effect of different experimental processing parameters, such as annealing temperatures, reaction times and different ratios of salt mixtures on the structure and morphology of these nanoparticles. The overall core size and shell thickness can be controlled by varying the reactant concentration both the core and shell material. These core@shell nanoparticles were then characterized mainly using power x-ray diffraction, transmission and scanning electron microscopes, and photoluminescence measurements. More importantly, their photoluminescence was carefully studied. These special properties allow these compounds as excellent candidates for broad applications in various devices, such as in lighting devices and radiation detectors.;Key Words: Core-shell nanoparticles, growth kinetics, SEM, TEM and photoluminescence.
机译：许多稀土化合物具有用于各种重要应用的光致发光特性。在这项研究中，首先通过熔融盐合成法可控地合成了do掺杂的La2Zr 2O7纳米粒子。这些纳米粒子用作YBO3壳涂层的核心。然后，我们探索了不同的实验处理参数（例如退火温度，反应时间和不同比例的盐混合物）对这些纳米颗粒的结构和形态的影响。总体核尺寸和壳厚度可以通过改变核材料和壳材料的反应物浓度来控制。然后主要使用功率X射线衍射，透射和扫描电子显微镜以及光致发光测量来表征这些核壳纳米颗粒。更重要的是，对它们的光致发光进行了仔细的研究。这些特殊的性能使这些化合物成为在各种设备（例如照明设备和辐射探测器）中广泛应用的极好的候选对象。关键词：核壳纳米粒子，生长动力学，SEM，TEM和光致发光。

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  • 作者

    Alaparthi, Suresh Babu.;

  • 作者单位

    The University of Texas - Pan American.;

  • 授予单位 The University of Texas - Pan American.;
  • 学科 Chemistry Physical.;Nanoscience.
  • 学位 M.S.
  • 年度 2012
  • 页码 70 p.
  • 总页数 70
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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