Lee, Woo-Jung Ma, Jinwon Bae, Jungmin Cho, Mann-Ho Ahn, Jae Pyung 2024-01-20T17:34:31Z 2024-01-20T17:34:31Z 2021-09-02 2011-02 1466-8033 https://pubs.kist.re.kr/handle/201004/130696 Silicon nanowires (SiNWs) were synthesized by means of a Vapor-Liquid-Solid (VLS) procedure using Au as a catalyst in a UHV-CVD system. The growth of the SiNWs was critically dependent on the flow rate of H-2. In our system, the nanowires showed novel features such as faceting phenomenon and the migration of Au atoms on the lateral surface, which were dependent on the flow rate of H-2. In particular, Au that diffused from the catalyst tip to the facet edge was transformed into Au clusters, resulting in the formation of numerous Au stripes that entirely surrounded the pillar during the growth process. A one step synthesis of branched SiNWs can be achieved via the presence of Au clusters at the lateral surface under conditions of a high flow rate of H-2. The growth kinetics of SiNWs as a function of H-2 flow rate lead to the conclusion that the influence of the effect of hydrogen is a major factor in controlling the growth of SiNWs under conditions of a low partial pressure of silane. English ROYAL SOC CHEMISTRY GOLD ARRAYS Effects of hydrogen on Au migration and the growth kinetics of Si nanowires Article 10.1039/c0ce00239a 1 CRYSTENGCOMM, v.13, no.2, pp.690 - 696 CRYSTENGCOMM 13 2 690 696 scie scopus 000285514000048 2-s2.0-78650365379 Chemistry, Multidisciplinary Crystallography Chemistry Crystallography Article GOLD ARRAYS