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Cluster size dependence of SiO_2 thin film formation by O_2 gas cluster ion beams

机译:O_2气体团簇离子束形成SiO_2薄膜的团簇尺寸依赖性

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摘要

Cluster size effects of SiO_2 thin film formation with size-selected O_2 gas cluster ion beams (GCIBs) irradiation on Si surface were studied. The cluster size varied between 500 and 20,000 molecules/cluster. With acceleration voltage of 5 kV, the SiO_2 thickness was close to the native oxide thickness by irradiation of (02)20.000 (0.25 eV/molecule), or (O_2)_(10,000) (0.5 eV/molecule). However, it increased suddenly above 1 eV/molecule (5000 molecules/cluster), and increased monotonically up to 10eV/ molecule (500 molecules/cluster). The SiO_2 thickness with 1 and 10 eV/molecule O_2-GCIB were 2.1 and 5.0 nm, respectively. When the acceleration voltage was 30 kV, the SiO_2 thickness has a peak around 10eV/molecule (3000 molecules/cluster), and it decreased gradually with increasing the energy/ molecule. At high energy/molecule, physical sputtering effect became more dominant process than oxide formation. These results suggest that SiO_2 thin film formation can be controlled by energy per molecule.
机译:研究了尺寸选择的O_2气体团簇离子束(GCIBs)辐照Si表面SiO_2薄膜的团簇尺寸效应。簇的大小在500到20,000个分子/簇之间变化。在5kV的加速电压下,通过照射(02)20.000(0.25eV /分子)或(O_2)_(10,000)(0.5eV /分子),SiO 2的厚度接近天然氧化物的厚度。但是,它突然超过1 eV /分子(5000分子/簇),并单调增加到10eV /分子(500分子/簇)。具有1和10 eV /分子O_2-GCIB的SiO_2厚度分别为2.1和5.0 nm。当加速电压为30 kV时,SiO_2厚度在10eV /分子附近(3000分子/簇)有一个峰值,并且随着能量/分子的增加而逐渐减小。在高能量/分子下,物理溅射效应比形成氧化物的过程更占主导地位。这些结果表明,SiO 2薄膜的形成可以通过每个分子的能量来控制。

著录项

  • 来源
    《Applied Surface Science》 |2009年第4期|1106-1109|共4页
  • 作者

    T. Mashita; N. Toyoda; I. Yamada;

  • 作者单位

    Graduate School of Engineering, University of Hyogo, 2167 Shosha, Himeji, Hyogo 671-2201, Japan;

    Graduate School of Engineering, University of Hyogo, 2167 Shosha, Himeji, Hyogo 671-2201, Japan;

    Graduate School of Engineering, University of Hyogo, 2167 Shosha, Himeji, Hyogo 671-2201, Japan;

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

    gas cluster ion beam; cluster size; thin film;

    机译:气团离子束簇的大小;薄膜;

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