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首页> 外文期刊>Journal of Crystal Growth >Growth mechanisms of vapor-liquid-solid grown nanowires: A detailed analysis of irregular nanowire formation
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Growth mechanisms of vapor-liquid-solid grown nanowires: A detailed analysis of irregular nanowire formation

机译：气液固相生长纳米线的生长机理：不规则纳米线形成的详细分析

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摘要

Although vapor-liquid-solid (VLS) growth has become a standard method for producing nanowires, the underlying growth mechanisms have not been fully elucidated because VLS growth is affected by thermodynamic and geometrical factors that, to date, have mainly been considered separately. Based on the assumption that the irregular nanowire growth reflects the conditions of the eutectic droplet during nanowire growth, we aimed to elucidate the thermodynamic and geometrical aspects of the growth mechanisms by the measurement and analysis of irregular kinked and curved Si nanowires grown by Au-catalyzed VLS. The results suggest that kinked nanowires may be caused by higher supersaturation, whereas curved nanowires may be caused by lower supersaturation within the eutectic Au-Si droplet. The results of measuring and analyzing irregular nanowires confirmed that both thermodynamic and geometrical effects complexly influence nanowire growth kinetics, particularly the supersaturation of eutectic droDlets. and the effects are more Dronounced in larger diameter nanowires.
机译：尽管气液固（VLS）的生长已成为生产纳米线的标准方法，但由于VLS的生长受到热力学和几何因素的影响，因此尚未完全阐明其潜在的生长机理，迄今为止，热力学和几何因素已被单独考虑。基于不规则纳米线生长反映纳米线生长过程中共晶液滴状况的假设，我们旨在通过测量和分析Au催化生长的不规则扭结和弯曲Si纳米线来阐明生长机理的热力学和几何方面。 VLS。结果表明，弯曲的纳米线可能是由较高的过饱和度引起的，而弯曲的纳米线可能是由低共熔的Au-Si液滴内的较低的过饱和度引起的。测量和分析不规则纳米线的结果证实，热力学和几何效应均会复杂地影响纳米线的生长动力学，特别是共晶微滴的过饱和。在更大直径的纳米线中，这种影响更为明显。

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