Type

Journal Article

Authors

Justin D. Holmes
Michael A. Morris
Colm O'Regan
Subhajit Biswas

Subjects

Physics

Topics
heterogeneous interfaces nanowire growth kinetics in situ observations observations in situ electron microscopy liquids ternary eutectic alloys tem binary systems silver silver alloys semiconductor nanowires nanowire semiconductor nanowire eutectics behaviour in situ microscopies kinetics phase interfaces germanium germanium alloys vls nanowires thermodynamics liquid solid interfaces growth kinetics alloys nanoscale

In-situ observations of nanoscale effects in germanium nanowire growth with ternary eutectic alloys. (2014)

Abstract Vapour-liquid-solid (VLS) techniques are popular routes for the scalable synthesis of semiconductor nanowires. In this article, in-situ electron microscopy is used to correlate the equilibrium content of ternary (Au0.75 Ag0.25 -Ge and Au0.65 Ag0.35 -Ge) metastable alloys with the kinetics, thermodynamics and diameter of Ge nanowires grown via a VLS mechanism. The shape and geometry of the heterogeneous interfaces between the liquid eutectic and solid Ge nanowires varies as a function of nanowire diameter and eutectic alloy composition. The behaviour of the faceted heterogeneous liquid-solid interface correlates with the growth kinetics of the nanowires, where the main growth facet at the solid nanowire-liquid catalyst drop contact line lengthens for faster nanowire growth kinetics. Pronounced diameter dependent growth kinetics, as inferred from liquid-solid interfacial behaviour, is apparent for the synthesised nanowires. Direct in-situ microscopy observations facilitates the comparison between the nanowire growth behaviour from ternary (Au-Ag-Ge) and binary (Au-Ge) eutectic systems.
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Ireland -> University College Cork -> Materials Chemistry and Analysis Group - Journal articles

Full list of authors on original publication

Justin D. Holmes, Michael A. Morris, Colm O'Regan, Subhajit Biswas

Experts in our system

1
Justin D. Holmes
University College Cork
Total Publications: 287
 
2
Michael A. Morris
University College Cork
Total Publications: 164
 
3
Colm O'Regan
University College Cork
Total Publications: 16
 
4
Subhajit Biswas
University College Cork
Total Publications: 43