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Pure wurtzite GaP nanowires grown on zincblende GaP substrates by selective area vapor liquid solid epitaxy

机译:通过选择性区域蒸汽液体固体外延在锌混合间隙基板中生长纯紫立茨间隙纳米线

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摘要

We report on the growth of single phase wurtzite (WZ) GaP nanowires (NWs) on GaP (111) B substrates by metal organic molecular beam epitaxy following the selective area vapor-liquid-solid (SA-VLS) approach. During the SA-VLS process, precursors are supplied directly to the NW sidewalls, and the short diffusion length of gallium (or its precursors) does not significantly limit axial growth. Transmission electron microscopy (TEM) images reveal that no stacking faults are present along a 600 nm long NW. The lattice constants of the pure WZ GaP obtained from the TEM images agree with values determined previously by x-ray diffraction from non-pure NW ensembles.
机译:我们通过在选择性区域蒸汽 - 固体 - 固体(SA-VLS)方法之后,通过金属有机分子束外延报告单相紫立岩(WZ)间隙纳米线(NWS)的生长。 在SA-VLS过程中,前体直接向NW侧壁供应,并且镓(或其前体)的短扩散长度不会显着限制轴向生长。 透射电子显微镜(TEM)图像显示,没有沿600nm长的NW存在堆叠故障。 从TEM图像获得的纯WZ间隙的晶格常数同意先前通过来自非纯NW集合的X射线衍射确定的值。

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