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Simultaneous growth mechanisms for Cu-seeded InP nanowires

Hillerich, Karla LU ; Dick Thelander, Kimberly LU ; Messing, Maria LU ; Deppert, Knut LU and Johansson, Jonas LU (2012) In Nano Reseach 5(5). p.297-306
Abstract
We report on epitaxial growth of InP nanowires (NWs) from Cu seed particles by metal-organic vapor phase epitaxy (MOVPE). Vertically-aligned straight nanowires can be achieved in a limited temperature range between 340 A degrees C and 370 A degrees C as reported earlier. In this paper we present the effect of the V/III ratio on nanowire morphology, growth rate, and particle configuration at a growth temperature of 350 A degrees C. Two regimes can be observed in the investigated range of molar fractions. At high V/III ratios nanowires grow from a solid Cu2In particle. At low V/III ratios, nanowire growth from two particle types occurs simultaneously: Growth from solid Cu2In particles, and significantly faster growth from In-rich particles.... (More)
We report on epitaxial growth of InP nanowires (NWs) from Cu seed particles by metal-organic vapor phase epitaxy (MOVPE). Vertically-aligned straight nanowires can be achieved in a limited temperature range between 340 A degrees C and 370 A degrees C as reported earlier. In this paper we present the effect of the V/III ratio on nanowire morphology, growth rate, and particle configuration at a growth temperature of 350 A degrees C. Two regimes can be observed in the investigated range of molar fractions. At high V/III ratios nanowires grow from a solid Cu2In particle. At low V/III ratios, nanowire growth from two particle types occurs simultaneously: Growth from solid Cu2In particles, and significantly faster growth from In-rich particles. We discuss a possible growth mechanism relying on a dynamic interplay between vapor-liquid-solid (VLS) and vapor-solid-solid (VSS) growth. Our results bring us one step closer to the replacement of Au as seed particle material as well as towards a deeper understanding of particle-assisted nanowire growth. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Nanowires, MOVPE, MOCVD, epitaxy, InP, Cu seed particle
in
Nano Reseach
volume
5
issue
5
pages
297 - 306
publisher
Springer
external identifiers
  • wos:000304114100001
  • scopus:84860912950
ISSN
1998-0124
DOI
10.1007/s12274-012-0210-9
language
English
LU publication?
yes
id
52f89627-bc2a-4e87-9f44-b81b4d5a98e9 (old id 2813046)
date added to LUP
2012-06-25 09:23:02
date last changed
2017-06-25 03:09:06
@article{52f89627-bc2a-4e87-9f44-b81b4d5a98e9,
  abstract     = {We report on epitaxial growth of InP nanowires (NWs) from Cu seed particles by metal-organic vapor phase epitaxy (MOVPE). Vertically-aligned straight nanowires can be achieved in a limited temperature range between 340 A degrees C and 370 A degrees C as reported earlier. In this paper we present the effect of the V/III ratio on nanowire morphology, growth rate, and particle configuration at a growth temperature of 350 A degrees C. Two regimes can be observed in the investigated range of molar fractions. At high V/III ratios nanowires grow from a solid Cu2In particle. At low V/III ratios, nanowire growth from two particle types occurs simultaneously: Growth from solid Cu2In particles, and significantly faster growth from In-rich particles. We discuss a possible growth mechanism relying on a dynamic interplay between vapor-liquid-solid (VLS) and vapor-solid-solid (VSS) growth. Our results bring us one step closer to the replacement of Au as seed particle material as well as towards a deeper understanding of particle-assisted nanowire growth.},
  author       = {Hillerich, Karla and Dick Thelander, Kimberly and Messing, Maria and Deppert, Knut and Johansson, Jonas},
  issn         = {1998-0124},
  keyword      = {Nanowires,MOVPE,MOCVD,epitaxy,InP,Cu seed particle},
  language     = {eng},
  number       = {5},
  pages        = {297--306},
  publisher    = {Springer},
  series       = {Nano Reseach},
  title        = {Simultaneous growth mechanisms for Cu-seeded InP nanowires},
  url          = {http://dx.doi.org/10.1007/s12274-012-0210-9},
  volume       = {5},
  year         = {2012},
}