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首页> 外文期刊>Journal of Crystal Growth >Tip-growth mode and base-growth mode of Au-catalyzed zinc oxide nanowires using chemical vapor deposition technique
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Tip-growth mode and base-growth mode of Au-catalyzed zinc oxide nanowires using chemical vapor deposition technique

机译：使用化学气相沉积技术的Au催化氧化锌纳米线的尖端生长模式和基础生长模式

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摘要

Tip-growth and base-growth modes of Au-catalyzed zinc oxide nanowires (ZnO NWs) were synthesized on Au-fllm pre-deposited silicon substrates using Chemical Vapor Deposition (CVD) technique. The diameter of tip-growth Au-catalyzed ZnO NWs was proportional to the Au film thickness, whereas the areal density of these NWs was inversely proportional to the Au film thickness. It would be more appropriate to explain the growth of Au-catalyzed ZnO NWs by a combination of Vapor-Liquid-Solid and Vapor-Solid (VLS-VS) mechanisms instead of the conventional VLS mechanism, regardless of tip-growth or base-growth mode of Au-catalyzed ZnO NWs. The competition between the VLS and VS mechanism in the effectiveness of capturing the adsorbed Zn and 0 atoms would determine the final morphology of ZnO NWs. In addition, Au catalyst promoted the growth rate of NWs as compared to the self-catalyzed ZnO NWs.
机译：利用化学气相沉积（CVD）技术，在Au膜预沉积的硅衬底上合成了Au催化的氧化锌纳米线（ZnO NWs）的尖端生长和基础生长模式。尖端生长的Au催化的ZnO NW的直径与Au膜厚成正比，而这些NW的面密度与Au膜厚成反比。不论尖端生长还是基础生长，用汽液固和汽固（VLS-VS）机制代替传统的VLS机理来解释金催化的ZnO NW的生长将更为合适。催化的ZnO NWs的模式VLS和VS机制之间在捕获吸附的Zn和0原子的有效性方面的竞争将决定ZnO NW的最终形态。另外，与自催化的ZnO NW相比，Au催化剂促进了NW的生长速率。

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  • 来源
    《Journal of Crystal Growth》 |2010年第14期|P.2049-2055|共7页
  • 作者

    Swee-Yong Pung; rnKwang-Leong Choy; rnXianghui Hou;

  • 作者单位

    Faculty of Engineering, Department of Mechanical, Materials, and Manufacturing Engineering, University Park, University of Nottingham, Nottingham NG7 2RD, United Kingdom;

    rnFaculty of Engineering, Department of Mechanical, Materials, and Manufacturing Engineering, University Park, University of Nottingham, Nottingham NG7 2RD, United Kingdom;

    rnFaculty of Engineering, Department of Mechanical, Materials, and Manufacturing Engineering, University Park, University of Nottingham, Nottingham NG7 2RD, United Kingdom;

  • 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
  • 关键词

    A1. Growth model; A1. Nanostructures; A1. Nucleation; A3. Chemical vapor deposition; B1. ZnO; B2. Semiconducting II-VI materials;

    机译：A1。增长模型;A1。纳米结构;A1。成核;A3。化学气相沉积;B1。氧化锌;B2。半导体II-VI材料;

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