Direct writing of silicon nanostructures using liquid-phase electron beam induced deposition of hydrosilanes

Direct writing of silicon nanostructures using liquid-phase electron beam induced deposition of hydrosilanes
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使用液相电子束诱导氢硅烷沉积直接写入硅纳米结构

DOI:
10.1088/1361-6528/abe0e9
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发表时间:
2021
期刊:
影响因子:
3.5
通讯作者:
Mori Masahiro
Mori Masahiro
中科院分区:
材料科学3区
文献类型:
--
作者:
Masuda Takashi;Mori Masahiro

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固体Si(晶片)和气态Si(硅烷)通常用作制造Si器件的起始材料。在这项研究中,一种液体前体(液相氢硅烷)的半导体硅,称为液体硅(liq-Si),合成建立一个液体路径制造硅。虽然液体到固体的Si转化可以通过在400 ° C下加热来诱导,但是在此通过电子束(EB)照射来实现没有加热的转化。本研究首次用电子束辐照液态硅。尺寸可控的Si纳米点,直径的顺序为100 nm,直接沉积在任何点通过液相电子束诱导沉积(LP-EBID)与50 nm的光束直径。与典型的EBID相比,这种方法在能量色散X射线光谱的检测极限下得到的沉积物中碳杂质含量高达90%。LP-EBID的加工分辨率可能为1 nm或更低。因此,这种非加热沉积技术实现了Si纳米结构的直接写入,将成为Si纳米制造的有力工具。
Solid Si (wafer) and gaseous Si (silane) are generally used as starting materials for fabricating Si devices. In this study, a liquid precursor (liquid-phase hydrosilane) for semiconducting Si, called liquid Si (liq-Si), was synthesized to establish a liquid pathway for fabricating Si. Although the liquid-to-solid Si conversion can be induced by heating at 400 C, conversion without heating was realized herein by electron-beam (EB) irradiation. This study is the first to irradiate liq-Si with EB. Size-controllable Si nanodots, with diameters of the order of 100 nm, were directly deposited at any point by liquid-phase electron-beam-induced deposition (LP-EBID) with a beam diameter of 50 nm. This approach yielded less-contaminated deposits at the detection limit of energy-dispersive x-ray spectroscopy, as opposed to typical EBID, wherein carbon impurities up to 90% are found. The processing resolution of LP-EBID is potentially 1 nm or less. Therefore, this non-heating deposition technique realizes the direct writing of Si nanostructures and would be a powerful tool for Si nanofabrication.
使用 Xe、Ar、He 和 H2 稀释气体对 RF SiH4 等离子体中的 SiH2 密度进行激光诱导荧光研究
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