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Analysis of the Growth of Laterally Aligned SnO2 Nanowires by Thermodynamic Considerations and Experiments

机译:热力学考虑因素和实验分析横向对齐的SnO2纳米线的生长

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摘要

Recently, we reported the experimental tuning of the growth of freestanding SnO_(2) nanowires to a laterally aligned nanowire growth mode. Here, we present thermodynamic considerations taking into account the previously reported influencing parameters determining the experiments, i.e., the total pressure, the Sn/O ratio at the sample sites, the nanowire diameter, and the substrate type. We will discuss process parameters which will prefer a laterally aligned growth mode. We show that a continuous gold film used as catalyst inhibits the laterally aligned growth. Only at the edges the lateral growth can proceed, whereas the area region is covered by freestanding wires. The reason for that will be explained in a model. Furthermore, the laterally aligned nanowire surface faceting is analyzed by means of transmission electron microscopy and atomic force microscopy and explained.
机译:最近,我们报道了将独立式SnO_2纳米线的生长调整为横向排列的纳米线生长模式的实验。在这里,我们提出了热力学方面的考虑,其中考虑了之前报道的决定实验的影响参数,即总压、样品位置的Sn/O比、纳米线直径和衬底类型。我们将讨论更倾向于横向排列生长模式的工艺参数。我们发现,作为催化剂的连续金膜抑制了横向排列的生长。只有在边缘才能进行横向生长,而该区域由独立的导线覆盖。原因将在模型中解释。此外,利用透射电子显微镜和原子力显微镜对横向排列的纳米线表面刻面进行了分析和解释。

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  • 来源
    《Crystal growth & design》 |2021年第1期|共9页
  • 作者单位

    Laboratory for Nanotechnology Department of Microsystems Engineering (IMTEK) University of Freiburg;

    Laboratory for Nanotechnology Department of Microsystems Engineering (IMTEK) University of Freiburg;

    Freiburg Center for Interactive Materials and Bioinspired Technologies (FIT) University of Freiburg;

    Freiburg Materials Research Center (FMF) and Institute for Macromolecular Chemistry University of Freiburg;

    Department of Sustainable Systems Engineering (INATECH) University of Freiburg Emmy-Noether-Strasse;

    Department of Sustainable Systems Engineering (INATECH) University of Freiburg Emmy-Noether-Strasse;

    Laboratory for Nanotechnology Department of Microsystems Engineering (IMTEK) University of Freiburg;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 晶体学;
  • 关键词

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