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Quantitative study of GaAs nanowires catalyzed by Au film of different thicknesses
In this letter, we quantitatively investigated epitaxial GaAs nanowires catalyzed by thin Au films of different thicknesses on GaAs (111)(B) substrates in a metal-organic chemical vapor deposition reactor. Prior to nanowire growth, the de-wetting of Au thin films to form Au nanoparticles on GaAs (11...
Autores principales: | , , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Springer
2012
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3552812/ https://www.ncbi.nlm.nih.gov/pubmed/23095345 http://dx.doi.org/10.1186/1556-276X-7-589 |
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author | Xu, Hong-yi Guo, Ya-nan Sun, Wen Liao, Zhi-ming Burgess, Timothy Lu, Hao-feng Gao, Qiang Tan, Hark Hoe Jagadish, Chennupati Zou, Jin |
author_facet | Xu, Hong-yi Guo, Ya-nan Sun, Wen Liao, Zhi-ming Burgess, Timothy Lu, Hao-feng Gao, Qiang Tan, Hark Hoe Jagadish, Chennupati Zou, Jin |
author_sort | Xu, Hong-yi |
collection | PubMed |
description | In this letter, we quantitatively investigated epitaxial GaAs nanowires catalyzed by thin Au films of different thicknesses on GaAs (111)(B) substrates in a metal-organic chemical vapor deposition reactor. Prior to nanowire growth, the de-wetting of Au thin films to form Au nanoparticles on GaAs (111)(B) in AsH(3) ambient at different temperatures is investigated. It is found that with increasing film thickness, the size of the Au nanoparticles increases while the density of the nanoparticles reduces. Furthermore, higher annealing temperature produces larger Au nanoparticles for a fixed film thickness. As expected, the diameters and densities of the as-grown GaAs nanowires catalyzed by these thin Au films reflect these trends. |
format | Online Article Text |
id | pubmed-3552812 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2012 |
publisher | Springer |
record_format | MEDLINE/PubMed |
spelling | pubmed-35528122013-01-28 Quantitative study of GaAs nanowires catalyzed by Au film of different thicknesses Xu, Hong-yi Guo, Ya-nan Sun, Wen Liao, Zhi-ming Burgess, Timothy Lu, Hao-feng Gao, Qiang Tan, Hark Hoe Jagadish, Chennupati Zou, Jin Nanoscale Res Lett Nano Express In this letter, we quantitatively investigated epitaxial GaAs nanowires catalyzed by thin Au films of different thicknesses on GaAs (111)(B) substrates in a metal-organic chemical vapor deposition reactor. Prior to nanowire growth, the de-wetting of Au thin films to form Au nanoparticles on GaAs (111)(B) in AsH(3) ambient at different temperatures is investigated. It is found that with increasing film thickness, the size of the Au nanoparticles increases while the density of the nanoparticles reduces. Furthermore, higher annealing temperature produces larger Au nanoparticles for a fixed film thickness. As expected, the diameters and densities of the as-grown GaAs nanowires catalyzed by these thin Au films reflect these trends. Springer 2012-10-24 /pmc/articles/PMC3552812/ /pubmed/23095345 http://dx.doi.org/10.1186/1556-276X-7-589 Text en Copyright ©2012 Xu et al.; licensee Springer. http://creativecommons.org/licenses/by/2.0 This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. |
spellingShingle | Nano Express Xu, Hong-yi Guo, Ya-nan Sun, Wen Liao, Zhi-ming Burgess, Timothy Lu, Hao-feng Gao, Qiang Tan, Hark Hoe Jagadish, Chennupati Zou, Jin Quantitative study of GaAs nanowires catalyzed by Au film of different thicknesses |
title | Quantitative study of GaAs nanowires catalyzed by Au film of different thicknesses |
title_full | Quantitative study of GaAs nanowires catalyzed by Au film of different thicknesses |
title_fullStr | Quantitative study of GaAs nanowires catalyzed by Au film of different thicknesses |
title_full_unstemmed | Quantitative study of GaAs nanowires catalyzed by Au film of different thicknesses |
title_short | Quantitative study of GaAs nanowires catalyzed by Au film of different thicknesses |
title_sort | quantitative study of gaas nanowires catalyzed by au film of different thicknesses |
topic | Nano Express |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3552812/ https://www.ncbi.nlm.nih.gov/pubmed/23095345 http://dx.doi.org/10.1186/1556-276X-7-589 |
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