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Synthesis of nanostructures in nanowires using sequential catalyst reactions

Journal Article · · Nature Materials
DOI:https://doi.org/10.1038/NMAT4352· OSTI ID:1235860
 [1];  [2];  [3];  [4];  [4];  [5];  [3]
  1. Univ. of Cambridge, Cambridge (United Kingdom); T.J. Watson Research Center, Yorktown Heights, NY (United States)
  2. T.J. Watson Research Center, Yorktown Heights, NY (United States); National Chiao Tung Univ., Hsinchu City (Taiwan); Brookhaven National Lab. (BNL), Upton, NY (United States)
  3. T.J. Watson Research Center, Yorktown Heights, NY (United States)
  4. Brookhaven National Lab. (BNL), Upton, NY (United States)
  5. Univ. of Cambridge, Cambridge (United Kingdom)

Nanowire growth by the vapour–liquid–solid (VLS) process enables a high level of control over nanowire composition, diameter, growth direction, branching and kinking, periodic twinning, and crystal structure. The tremendous impact of VLS-grown nanowires is due to this structural versatility, generating applications ranging from solid-state lighting and single-photon sources to thermoelectric devices. Here, we show that the morphology of these nanostructures can be further tailored by using the liquid droplets that catalyse nanowire growth as a ‘mixing bowl’, in which growth materials are sequentially supplied to nucleate new phases. Growing within the liquid, these phases adopt the shape of faceted nanocrystals that are then incorporated into the nanowires by further growth. Furthermore, we demonstrate this concept by epitaxially incorporating metal-silicide nanocrystals into Si nanowires with defect-free interfaces, and discuss how this process can be generalized to create complex nanowire-based heterostructures.

Research Organization:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI ID:
1235860
Report Number(s):
BNL--111620-2015-JA; KC0403020
Journal Information:
Nature Materials, Journal Name: Nature Materials Journal Issue: 8 Vol. 14; ISSN 1476-1122
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English

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Cited By (14)

Atomic‐Scale Mechanism of Unidirectional Oxide Growth journal November 2019
In Situ Transmission Electron Microscopy book January 2019
Nanowire–quantum dot epitaxy journal July 2015
Nanoscale structural oscillations in perovskite oxides induced by oxygen evolution journal October 2016
Pulsed axial epitaxy of colloidal quantum dots in nanowires enables facet-selective passivation journal November 2018
Metastable morphological states of catalytic nanoparticles journal January 2018
In situ characterization of kinetics and mass transport of PbSe nanowire growth via LS and VLS mechanisms journal January 2019
Effects of metal silicide inclusion interface and shape on thermal transport in silicon nanocomposites journal July 2019
Growth of wurtzite CdTe nanowires on fluorine-doped tin oxide glass substrates and room-temperature bandgap parameter determination journal February 2018
Horizontal GaN nanowires grown on Si (111) substrate: the effect of catalyst migration and coalescence journal November 2018
Probing the dynamics of nanoparticle formation from a precursor at atomic resolution journal January 2019
In Situ Scanning Electron Microscope Observations of Li Plating/Stripping Reactions with Pt Current Collectors on LiPON Electrolyte journal January 2018
Solid-State Limited Nucleation of NiSi/SiC Core-Shell Nanowires by Hot-Wire Chemical Vapor Deposition journal February 2019
Copper Nanowires and Their Applications for Flexible, Transparent Conducting Films: A Review journal March 2016

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