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Fabrication of Coaxial Si(1−x)Ge(x) Heterostructure Nanowires by O(2) Flow-Induced Bifurcate Reactions
We report on bifurcate reactions on the surface of well-aligned Si(1−x)Ge(x) nanowires that enable fabrication of two different coaxial heterostructure nanowires. The Si(1−x)Ge(x) nanowires were grown in a chemical vapor transport process using SiCl(4) gas and Ge powder as a source. After the growth...
Autores principales: | , , , , , |
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Formato: | Texto |
Lenguaje: | English |
Publicado: |
Springer
2010
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2956027/ https://www.ncbi.nlm.nih.gov/pubmed/21076699 http://dx.doi.org/10.1007/s11671-010-9673-3 |
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author | Kim, Ilsoo Lee, Ki-Young Kim, Ungkil Park, Yong-Hee Park, Tae-Eon Choi, Heon-Jin |
author_facet | Kim, Ilsoo Lee, Ki-Young Kim, Ungkil Park, Yong-Hee Park, Tae-Eon Choi, Heon-Jin |
author_sort | Kim, Ilsoo |
collection | PubMed |
description | We report on bifurcate reactions on the surface of well-aligned Si(1−x)Ge(x) nanowires that enable fabrication of two different coaxial heterostructure nanowires. The Si(1−x)Ge(x) nanowires were grown in a chemical vapor transport process using SiCl(4) gas and Ge powder as a source. After the growth of nanowires, SiCl(4) flow was terminated while O(2) gas flow was introduced under vacuum. On the surface of nanowires was deposited Ge by the vapor from the Ge powder or oxidized into SiO(2) by the O(2) gas. The transition from deposition to oxidation occurred abruptly at 2 torr of O(2) pressure without any intermediate region and enables selectively fabricated Ge/Si(1−x)Ge(x) or SiO(2)/Si(1−x)Ge(x) coaxial heterostructure nanowires. The rate of deposition and oxidation was dominated by interfacial reaction and diffusion of oxygen through the oxide layer, respectively. |
format | Text |
id | pubmed-2956027 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2010 |
publisher | Springer |
record_format | MEDLINE/PubMed |
spelling | pubmed-29560272010-11-10 Fabrication of Coaxial Si(1−x)Ge(x) Heterostructure Nanowires by O(2) Flow-Induced Bifurcate Reactions Kim, Ilsoo Lee, Ki-Young Kim, Ungkil Park, Yong-Hee Park, Tae-Eon Choi, Heon-Jin Nanoscale Res Lett Nano Express We report on bifurcate reactions on the surface of well-aligned Si(1−x)Ge(x) nanowires that enable fabrication of two different coaxial heterostructure nanowires. The Si(1−x)Ge(x) nanowires were grown in a chemical vapor transport process using SiCl(4) gas and Ge powder as a source. After the growth of nanowires, SiCl(4) flow was terminated while O(2) gas flow was introduced under vacuum. On the surface of nanowires was deposited Ge by the vapor from the Ge powder or oxidized into SiO(2) by the O(2) gas. The transition from deposition to oxidation occurred abruptly at 2 torr of O(2) pressure without any intermediate region and enables selectively fabricated Ge/Si(1−x)Ge(x) or SiO(2)/Si(1−x)Ge(x) coaxial heterostructure nanowires. The rate of deposition and oxidation was dominated by interfacial reaction and diffusion of oxygen through the oxide layer, respectively. Springer 2010-06-17 /pmc/articles/PMC2956027/ /pubmed/21076699 http://dx.doi.org/10.1007/s11671-010-9673-3 Text en Copyright © 2010 The Author(s) https://creativecommons.org/licenses/by-nc/4.0/ This article is distributed under the terms of the Creative Commons Attribution Noncommercial License which permits any noncommercial use, distribution, and reproduction in any medium, provided the original author(s) and source are credited. |
spellingShingle | Nano Express Kim, Ilsoo Lee, Ki-Young Kim, Ungkil Park, Yong-Hee Park, Tae-Eon Choi, Heon-Jin Fabrication of Coaxial Si(1−x)Ge(x) Heterostructure Nanowires by O(2) Flow-Induced Bifurcate Reactions |
title | Fabrication of Coaxial Si(1−x)Ge(x) Heterostructure Nanowires by O(2) Flow-Induced Bifurcate Reactions |
title_full | Fabrication of Coaxial Si(1−x)Ge(x) Heterostructure Nanowires by O(2) Flow-Induced Bifurcate Reactions |
title_fullStr | Fabrication of Coaxial Si(1−x)Ge(x) Heterostructure Nanowires by O(2) Flow-Induced Bifurcate Reactions |
title_full_unstemmed | Fabrication of Coaxial Si(1−x)Ge(x) Heterostructure Nanowires by O(2) Flow-Induced Bifurcate Reactions |
title_short | Fabrication of Coaxial Si(1−x)Ge(x) Heterostructure Nanowires by O(2) Flow-Induced Bifurcate Reactions |
title_sort | fabrication of coaxial si(1−x)ge(x) heterostructure nanowires by o(2) flow-induced bifurcate reactions |
topic | Nano Express |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2956027/ https://www.ncbi.nlm.nih.gov/pubmed/21076699 http://dx.doi.org/10.1007/s11671-010-9673-3 |
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