Dimension Control of Hexagonal SiGe Single Branched Nanowires

IF 9.1 1区材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Nano Letters Pub Date : 2025-03-26 DOI:10.1021/acs.nanolett.5c0026710.1021/acs.nanolett.5c00267

Denny Lamon, Hidde A. J. van der Donk, Marcel A. Verheijen, Marvin M. Jansen and Erik P. A. M. Bakkers*,

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Abstract

Hexagonal SiGe, with its direct band gap, holds promising light-emission properties and potential for advanced optoelectronic applications. The growth of this material has been achieved as nanowires, within core–shell or multibranch trunk structures. However, core–shell designs are limited to radial growth, restricting the axial dimensional control, while multibranch structures lack growth precision, reducing their practical applicability. Here, we introduce a novel technique to grow hexagonal SiGe as single-branched nanowires, achieving unprecedented control over dimension and morphology. The branch diameter is precisely tuned by adjusting the trunk diameter, leveraging the use of the same Au catalyst particle throughout both trunk and branch growth. We investigate the growth rate and its diameter dependency within the Gibbs–Thomson framework, providing valuable insights into growth dynamics. This innovative method opens new opportunities for advanced studies on hexagonal SiGe, paving the way for developing next-generation quantum devices.

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六角锗硅单支纳米线的尺寸控制

六方SiGe具有直接带隙，具有良好的发光特性和先进光电应用的潜力。这种材料的生长已经实现了纳米线，在核-壳或多分支树干结构。然而，核壳结构的设计局限于径向生长，限制了轴向尺寸的控制，而多分支结构缺乏生长精度，降低了其实际适用性。在这里，我们介绍了一种将六边形SiGe生长为单支纳米线的新技术，实现了前所未有的尺寸和形态控制。分支直径是通过调整主干直径来精确调节的，在主干和分支生长过程中利用相同的Au催化剂颗粒。我们在吉布斯-汤姆森框架内研究了增长率及其直径依赖性，为增长动力学提供了有价值的见解。这种创新的方法为六边形SiGe的高级研究开辟了新的机会，为开发下一代量子器件铺平了道路。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Nano Letters 工程技术-材料科学：综合

CiteScore

16.80

自引率

2.80%

发文量

1182

审稿时长

1.4 months

期刊介绍： Nano Letters serves as a dynamic platform for promptly disseminating original results in fundamental, applied, and emerging research across all facets of nanoscience and nanotechnology. A pivotal criterion for inclusion within Nano Letters is the convergence of at least two different areas or disciplines, ensuring a rich interdisciplinary scope. The journal is dedicated to fostering exploration in diverse areas, including: - Experimental and theoretical findings on physical, chemical, and biological phenomena at the nanoscale - Synthesis, characterization, and processing of organic, inorganic, polymer, and hybrid nanomaterials through physical, chemical, and biological methodologies - Modeling and simulation of synthetic, assembly, and interaction processes - Realization of integrated nanostructures and nano-engineered devices exhibiting advanced performance - Applications of nanoscale materials in living and environmental systems Nano Letters is committed to advancing and showcasing groundbreaking research that intersects various domains, fostering innovation and collaboration in the ever-evolving field of nanoscience and nanotechnology.