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首页> 外文期刊>Crystal growth & design >Synthesis of single-crystal ZnS nanoawls via two-step pressure-controlled vapor-phase deposition and their optical properties
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Synthesis of single-crystal ZnS nanoawls via two-step pressure-controlled vapor-phase deposition and their optical properties

机译：两步压力控制气相沉积法合成单晶ZnS纳米晶及其光学性质

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摘要

Large-scale synthesis of ZnS nanoawls was achieved by a simple two-step pressure-controlled vapor-phase deposition method. Awl-holders were well-rectangular faceted, and the diameter of the awl tips were in the range of 100-200 nm. High-resolution transmission electron microscopy shows that the nanoawls were single crystals growing along the [120] direction, which is different from the conventional [001] orientation. The optical properties of the ZnS nanoawls are also studied by Raman scattering and photoluminescence spectroscopy. The strong green emissions indicate that the nanoawls are promising for application in nanoscale optoelectronic devices. Furthermore, a possible two-stage growth mechanism of the ZnS nanoawls was also briefly discussed. By the suitable choice of source and synthetic parameters, it is reasonable to expect that the present synthesis route could be extended to obtain other semiconductor nanostructures.
机译：ZnS纳米原子的大规模合成是通过简单的两步压力控制气相沉积方法实现的。锥子的切面呈矩形，且锥子的直径在100-200 nm范围内。高分辨率透射电子显微镜显示，纳米晶是沿[120]方向生长的单晶，与传统的[001]方向不同。还通过拉曼散射和光致发光光谱学研究了ZnS纳米原子的光学性质。强烈的绿色发射表明，纳米原子有望用于纳米级光电器件。此外，还简要讨论了ZnS纳米原子可能的两阶段生长机理。通过适当选择来源和合成参数，可以合理地期望可以将本合成路线扩展至获得其他半导体纳米结构。

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