Journal article

The synthesis of matrices of embedded semiconducting nanowires

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Publication Details

Author list: Olin, Håkan

Publication year: 2004

Start page: 311

End page: 326

Number of pages: 16

ISSN: 1364-5498

DOI: http://dx.doi.org/10.1039/b305156k


Abstract

In this work we report how single crystal nanowires can be assembled into regular arrays using mesoporous thin films to define the architecture. Mesoporous thin films were prepared by a sol-gel method. These provide films of very regular structure and dimensions. The films produced in this way have almost single crystal like structures and can also exhibit strong epitaxy to the underlying silicon substrate. The films are subjected to a supercritical fluid (SCF) environment in which a precursor is decomposed to yield nanowires of metals, semiconductors or oxides. Using these SCF conditions, pore filling is complete and the products are nanowires which are single crystals and structurally aligned in one direction. The growth mechanism of the nanowires is described and size effects discussed.


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