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Continuous gas-phase synthesis of nanowires with tunable properties.

Heurlin, Magnus LU ; Magnusson, Martin LU ; Lindgren, David LU ; Ek, Martin LU ; Wallenberg, Reine LU ; Deppert, Knut LU and Samuelson, Lars LU (2012) In Nature 492(7427). p.90-94
Abstract
Semiconductor nanowires are key building blocks for the next generation of light-emitting diodes, solar cells and batteries. To fabricate functional nanowire-based devices on an industrial scale requires an efficient methodology that enables the mass production of nanowires with perfect crystallinity, reproducible and controlled dimensions and material composition, and low cost. So far there have been no reports of reliable methods that can satisfy all of these requirements. Here we show how aerotaxy, an aerosol-based growth method, can be used to grow nanowires continuously with controlled nanoscale dimensions, a high degree of crystallinity and at a remarkable growth rate. In our aerotaxy approach, catalytic size-selected Au aerosol... (More)
Semiconductor nanowires are key building blocks for the next generation of light-emitting diodes, solar cells and batteries. To fabricate functional nanowire-based devices on an industrial scale requires an efficient methodology that enables the mass production of nanowires with perfect crystallinity, reproducible and controlled dimensions and material composition, and low cost. So far there have been no reports of reliable methods that can satisfy all of these requirements. Here we show how aerotaxy, an aerosol-based growth method, can be used to grow nanowires continuously with controlled nanoscale dimensions, a high degree of crystallinity and at a remarkable growth rate. In our aerotaxy approach, catalytic size-selected Au aerosol particles induce nucleation and growth of GaAs nanowires with a growth rate of about 1 micrometre per second, which is 20 to 1,000 times higher than previously reported for traditional, substrate-based growth of nanowires made of group III-V materials. We demonstrate that the method allows sensitive and reproducible control of the nanowire dimensions and shape--and, thus, controlled optical and electronic properties--through the variation of growth temperature, time and Au particle size. Photoluminescence measurements reveal that even as-grown nanowires have good optical properties and excellent spectral uniformity. Detailed transmission electron microscopy investigations show that our aerotaxy-grown nanowires form along one of the four equivalent〈111〉B crystallographic directions in the zincblende unit cell, which is also the preferred growth direction for III-V nanowires seeded by Au particles on a single-crystal substrate. The reported continuous and potentially high-throughput method can be expected substantially to reduce the cost of producing high-quality nanowires and may enable the low-cost fabrication of nanowire-based devices on an industrial scale. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Nature
volume
492
issue
7427
pages
90 - 94
publisher
Nature Publishing Group
external identifiers
  • wos:000311893400051
  • pmid:23201685
  • scopus:84870515186
ISSN
0028-0836
DOI
10.1038/nature11652
language
English
LU publication?
yes
id
142e4c59-64ff-4db2-a16a-658933b4f564 (old id 3347775)
date added to LUP
2013-02-06 09:38:07
date last changed
2017-10-22 03:30:31
@article{142e4c59-64ff-4db2-a16a-658933b4f564,
  abstract     = {Semiconductor nanowires are key building blocks for the next generation of light-emitting diodes, solar cells and batteries. To fabricate functional nanowire-based devices on an industrial scale requires an efficient methodology that enables the mass production of nanowires with perfect crystallinity, reproducible and controlled dimensions and material composition, and low cost. So far there have been no reports of reliable methods that can satisfy all of these requirements. Here we show how aerotaxy, an aerosol-based growth method, can be used to grow nanowires continuously with controlled nanoscale dimensions, a high degree of crystallinity and at a remarkable growth rate. In our aerotaxy approach, catalytic size-selected Au aerosol particles induce nucleation and growth of GaAs nanowires with a growth rate of about 1 micrometre per second, which is 20 to 1,000 times higher than previously reported for traditional, substrate-based growth of nanowires made of group III-V materials. We demonstrate that the method allows sensitive and reproducible control of the nanowire dimensions and shape--and, thus, controlled optical and electronic properties--through the variation of growth temperature, time and Au particle size. Photoluminescence measurements reveal that even as-grown nanowires have good optical properties and excellent spectral uniformity. Detailed transmission electron microscopy investigations show that our aerotaxy-grown nanowires form along one of the four equivalent〈111〉B crystallographic directions in the zincblende unit cell, which is also the preferred growth direction for III-V nanowires seeded by Au particles on a single-crystal substrate. The reported continuous and potentially high-throughput method can be expected substantially to reduce the cost of producing high-quality nanowires and may enable the low-cost fabrication of nanowire-based devices on an industrial scale.},
  author       = {Heurlin, Magnus and Magnusson, Martin and Lindgren, David and Ek, Martin and Wallenberg, Reine and Deppert, Knut and Samuelson, Lars},
  issn         = {0028-0836},
  language     = {eng},
  number       = {7427},
  pages        = {90--94},
  publisher    = {Nature Publishing Group},
  series       = {Nature},
  title        = {Continuous gas-phase synthesis of nanowires with tunable properties.},
  url          = {http://dx.doi.org/10.1038/nature11652},
  volume       = {492},
  year         = {2012},
}