Nano Archive

Phase diagram of nanoscale alloy particles used for vapor-liquid-solid growth of semiconductor nanowires

Sutter, Eli and Sutter, Peter (2008) Phase diagram of nanoscale alloy particles used for vapor-liquid-solid growth of semiconductor nanowires. NANO LETTERS, 8 (2). pp. 411-414.

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Official URL: http://dx.doi.org/10.1021/nl0719630

Abstract

We use transmission electron microscopy observations to establish the parts of the phase diagram of nanometer sized Au-Ge alloy drops at the tips of Ge nanowires (NWs) that determine their temperature-dependent equilibrium composition and, hence, their exchange of semiconductor material with the NWs. We find that the phase diagram of the nanoscale drop deviates significantly from that of the bulk alloy, which explains discrepancies between actual growth results and predictions on the basis of the bulk-phase equilibria. Our findings provide the basis for tailoring vapor-liquid-solid growth to achieve complex one-dimensional materials geometries.

Item Type:Article
Subjects:Analytical Science > Microscopy and probe methods
Physical Science > Nano objects
Material Science > Nanochemistry
ID Code:2354
Deposited By:Anuj Seth
Deposited On:17 Dec 2008 16:34
Last Modified:20 Jan 2009 10:36

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