Advanced

Capillary stability of vapor-liquid-solid crystallization processes and their comparison to Czochralski and Stepanov growth methods

Nebol'sin, Valery A.; Suyatin, Dmitry B. LU ; Dunaev, Alexander I. and Tatarenkov, Alexander F. (2017) In Journal of Crystal Growth 463. p.46-53
Abstract

Epitaxial semiconductor nanowires grown with vapor-liquid-solid crystallization processes are very attractive nanoscale objects for many different applications. Despite extensive studies of the growth mechanism, there is still a lack of understanding of the growth process; in particular, the stability of the vapor-liquid-solid crystallization process has not previously been studied. Here we examine the capillary stability of the vapor-liquid-solid growth of nanowires and filamentary crystals with different diameters and demonstrate that the growth is stable for small Bond numbers when the meniscus height is linearly dependent on catalyst diameter. The capillary stability of vapor-liquid-solid growth is also compared with capillary... (More)

Epitaxial semiconductor nanowires grown with vapor-liquid-solid crystallization processes are very attractive nanoscale objects for many different applications. Despite extensive studies of the growth mechanism, there is still a lack of understanding of the growth process; in particular, the stability of the vapor-liquid-solid crystallization process has not previously been studied. Here we examine the capillary stability of the vapor-liquid-solid growth of nanowires and filamentary crystals with different diameters and demonstrate that the growth is stable for small Bond numbers when the meniscus height is linearly dependent on catalyst diameter. The capillary stability of vapor-liquid-solid growth is also compared with capillary stability in the Stepanov and Czochralski crystal growth methods; it is shown that capillary stability is not possible in the Czochralski method, although it is possible in the Stepanov growth method when the ratio of crystal diameter to shaper diameter is >1/2. These findings are important for better understanding and improved control of the growth of nanowires and filamentary crystals and indicate, for example, that large diameter filamentary crystals can be grown via a vapor-liquid-solid mechanism if the influence of gravity forces on the liquid catalytic particle shape can be reduced.

(Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
A1. Growth models, A1. Nanostructures, B1. Nanomaterials, B1. Nanowires, B2. Semiconducting III-V materials, B2. Semiconducting materials, B2. Semiconducting silicon
in
Journal of Crystal Growth
volume
463
pages
8 pages
publisher
Elsevier
external identifiers
  • scopus:85012309104
  • wos:000398006800008
ISSN
0022-0248
DOI
10.1016/j.jcrysgro.2017.01.018
language
English
LU publication?
yes
id
5ff9f63d-c773-4560-a457-8fea7985bef7
date added to LUP
2017-02-22 12:22:06
date last changed
2018-01-16 13:24:00
@article{5ff9f63d-c773-4560-a457-8fea7985bef7,
  abstract     = {<p>Epitaxial semiconductor nanowires grown with vapor-liquid-solid crystallization processes are very attractive nanoscale objects for many different applications. Despite extensive studies of the growth mechanism, there is still a lack of understanding of the growth process; in particular, the stability of the vapor-liquid-solid crystallization process has not previously been studied. Here we examine the capillary stability of the vapor-liquid-solid growth of nanowires and filamentary crystals with different diameters and demonstrate that the growth is stable for small Bond numbers when the meniscus height is linearly dependent on catalyst diameter. The capillary stability of vapor-liquid-solid growth is also compared with capillary stability in the Stepanov and Czochralski crystal growth methods; it is shown that capillary stability is not possible in the Czochralski method, although it is possible in the Stepanov growth method when the ratio of crystal diameter to shaper diameter is &gt;1/2. These findings are important for better understanding and improved control of the growth of nanowires and filamentary crystals and indicate, for example, that large diameter filamentary crystals can be grown via a vapor-liquid-solid mechanism if the influence of gravity forces on the liquid catalytic particle shape can be reduced.</p>},
  author       = {Nebol'sin, Valery A. and Suyatin, Dmitry B. and Dunaev, Alexander I. and Tatarenkov, Alexander F.},
  issn         = {0022-0248},
  keyword      = {A1. Growth models,A1. Nanostructures,B1. Nanomaterials,B1. Nanowires,B2. Semiconducting III-V materials,B2. Semiconducting materials,B2. Semiconducting silicon},
  language     = {eng},
  month        = {04},
  pages        = {46--53},
  publisher    = {Elsevier},
  series       = {Journal of Crystal Growth},
  title        = {Capillary stability of vapor-liquid-solid crystallization processes and their comparison to Czochralski and Stepanov growth methods},
  url          = {http://dx.doi.org/10.1016/j.jcrysgro.2017.01.018},
  volume       = {463},
  year         = {2017},
}