Title:
Control of Si Nanowire Structure via Surface Chemistry
Control of Si Nanowire Structure via Surface Chemistry
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Author(s)
Shin, Naechul
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Abstract
An ability to engineer the structure of semiconductor nanowires is essential for tuning
their optical, electrical, and thermal transport properties. While manipulation of growth
conditions offers an empirical route to control both the orientation of nanowire growth and the
stacking of individual atomic layers, a fundamental understanding of chemical bonding that
underlies these changes remains unclear and limits rational control of the process. In this talk, we
will discuss our recent real-time in-situ spectroscopic studies of Si nanowires synthesized via the
vapor-liquid-solid (VLS) mechanism and highlight the importance of adsorbed hydrogen atoms in
controlling nanowire structure. The use of this knowledge to fabricate user-programmable
nanowire superstructure will also be presented.
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Date Issued
2013-04-23
Extent
22:44 minutes
Resource Type
Moving Image
Resource Subtype
Lecture