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Growth of amorphous silicon nanowires via a solid-liquid-solid mechanism

机译:通过固液固机理生长非晶硅纳米线

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Amorphous silicon nanowires (a-SiNW)with an average diameter of ca.20 nm were synthesized at about 950deg C under an Ar/H_2 atmosphere on a large area of a (lll) Si substrate without supplying any gaseous or liquid Si sources.The Si substrate,deposited with a layer of Ni(ca.40 nm thick),served itself as a silicon source for the growth of the a-SiNWs.In contrast to the well-known vapor-liquid-solid (VLS) for conventional whisher growth,it was found that growth of the a-SiNWs was controlled by a solid-liquid-solid (SLS) mechanism,which is analogous to the VLS model.
机译:在Ar / H_2气氛下,在(III)Si衬底的大面积上,在不提供任何气态或液态Si源的情况下,在约950摄氏度下合成了平均直径约为20 nm的非晶硅纳米线(a-SiNW)。沉积有一层Ni(约40 nm厚)的Si衬底本身可作为a-SiNWs生长的硅源。与传统的晶须用众所周知的气液固(VLS)相反生长,发现a-SiNWs的生长受固-液-固(SLS)机理的控制,类似于VLS模型。

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