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首页> 外文期刊>Nanotechnology >Vertically aligned wurtzite CdTe nanowires derived from a catalytically driven growth mode
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Vertically aligned wurtzite CdTe nanowires derived from a catalytically driven growth mode

机译：垂直排列的纤锌矿CdTe纳米线源自催化驱动的生长模式

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Substrate-based catalytic growth modes have been widely used to fabricate vertically aligned nanowires for most technologically relevant semiconducting systems, with CdTe being a notable exception. The catalysts that promote a one-dimensional nanoscale growth mode in other systems seem to fail, creating the need for an alternative approach. Here, we demonstrate how nanowire structures can be derived from a newly developed catalytically driven process. The vertically aligned nanowires produced are highly faceted and share an epitaxial relationship with the underlying substrate. The nanowire structures could also be described as nanorods; they show a high degree of size uniformity over large areas with heights of 300 nm imposed by growth dynamics. Two-dimensional x-ray diffraction techniques indicate that the CdTe exists in the wurtzite crystal structure instead of the zinc blende structure normally associated with the bulk material. The work presented here adds these substrate-based wurtzite CdTe nanowires to the growing list of potential building blocks for nano-based devices.
机译：基于衬底的催化生长模式已被广泛用于制造与大多数技术相关的半导体系统的垂直排列纳米线，其中CdTe是一个明显的例外。在其他系统中促进一维纳米级生长模式的催化剂似乎失效，因此需要另一种方法。在这里，我们演示了如何从新开发的催化驱动过程中衍生出纳米线结构。产生的垂直排列的纳米线是高度刻面的，并且与下面的衬底共享外延关系。纳米线结构也可以描述为纳米棒。它们在生长动力学施加的300 nm高度的大区域上显示出高度的尺寸均匀性。二维X射线衍射技术表明CdTe存在于纤锌矿晶体结构中，而不是通常与块状材料相关的锌混合结构。此处介绍的工作将这些基于衬底的纤锌矿CdTe纳米线添加到了越来越多的基于纳米的设备的潜在构造块中。

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