The compositional homogeneity of the metal particle during vapor–liquid–solid growth of nanowires
(2020) In Scientific Reports 10(1).- Abstract
The vapor–liquid–solid (VLS) mechanism is probably the most versatile method to fabricate semiconductor nanowires and several investigations assume a compositionally homogeneous catalyst particle. In this investigation we address the compositional homogeneity of the catalyst particle during growth of nanowires. Using diffusion calculations, we show that the particle is indeed homogeneous during VLS growth, but can have a strong concentration gradient during vapor–solid–solid growth, that is, growth with a solid particle. We also show that the response to a concentration change is extremely fast, meaning that if the concentration at the surface of the particle changes, the entire particle reaches this new concentration effectively... (More)
The vapor–liquid–solid (VLS) mechanism is probably the most versatile method to fabricate semiconductor nanowires and several investigations assume a compositionally homogeneous catalyst particle. In this investigation we address the compositional homogeneity of the catalyst particle during growth of nanowires. Using diffusion calculations, we show that the particle is indeed homogeneous during VLS growth, but can have a strong concentration gradient during vapor–solid–solid growth, that is, growth with a solid particle. We also show that the response to a concentration change is extremely fast, meaning that if the concentration at the surface of the particle changes, the entire particle reaches this new concentration effectively instantaneously.
(Less)
- author
- Johansson, Jonas LU ; Overgaard, Niels Chr LU and Magnusson, Martin H. LU
- organization
- publishing date
- 2020
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Scientific Reports
- volume
- 10
- issue
- 1
- article number
- 11041
- publisher
- Nature Publishing Group
- external identifiers
-
- scopus:85087524408
- pmid:32632137
- ISSN
- 2045-2322
- DOI
- 10.1038/s41598-020-67618-x
- language
- English
- LU publication?
- yes
- id
- 77683a6c-434f-4503-9514-71e5fbf3dac9
- date added to LUP
- 2020-07-14 10:55:27
- date last changed
- 2024-04-03 11:37:21
@article{77683a6c-434f-4503-9514-71e5fbf3dac9, abstract = {{<p>The vapor–liquid–solid (VLS) mechanism is probably the most versatile method to fabricate semiconductor nanowires and several investigations assume a compositionally homogeneous catalyst particle. In this investigation we address the compositional homogeneity of the catalyst particle during growth of nanowires. Using diffusion calculations, we show that the particle is indeed homogeneous during VLS growth, but can have a strong concentration gradient during vapor–solid–solid growth, that is, growth with a solid particle. We also show that the response to a concentration change is extremely fast, meaning that if the concentration at the surface of the particle changes, the entire particle reaches this new concentration effectively instantaneously.</p>}}, author = {{Johansson, Jonas and Overgaard, Niels Chr and Magnusson, Martin H.}}, issn = {{2045-2322}}, language = {{eng}}, number = {{1}}, publisher = {{Nature Publishing Group}}, series = {{Scientific Reports}}, title = {{The compositional homogeneity of the metal particle during vapor–liquid–solid growth of nanowires}}, url = {{http://dx.doi.org/10.1038/s41598-020-67618-x}}, doi = {{10.1038/s41598-020-67618-x}}, volume = {{10}}, year = {{2020}}, }