1887
banner image
No data available.
Please log in to see this content.
You have no subscription access to this content.
No metrics data to plot.
The attempt to load metrics for this article has failed.
The attempt to plot a graph for these metrics has failed.
Stress-driven formation of Si nanowires
Rent:
Rent this article for
USD
10.1063/1.1925756
/content/aip/journal/apl/86/19/10.1063/1.1925756
http://aip.metastore.ingenta.com/content/aip/journal/apl/86/19/10.1063/1.1925756
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Si nanowires produced using a Si(111) substrates which had a native oxide present prior to the growth.. The growth was performed at 1050 °C for 1 h using a 36 sccm Ar to gas ratio.

Image of FIG. 2.
FIG. 2.

Si wafer annealed at 1100 °C in a vacuum, under gas flow. Note the extended cracks and the presence of silicon nanowires (white regions) only within these regions, while the smooth silicon areas contain no wires.

Image of FIG. 3.
FIG. 3.

Model for the growth of Si nanowires: The layer experiences large tensile stress, while the underlying Si region undergoes biaxial compressive stress due to difference in thermal expansion. The tensile stress in the oxide layer leads to stress cracks, which relieve the stress locally. This stress gradient results in mass transport to and the accumulation of Si atoms at or near the cracks, where material starts to build up, initiating the growth of the nanowires. The addition of hydrogen allows much enhanced surface diffusion along the concentration gradient, leading to the growth of long nanowires with a large aspect ratio.

Loading

Article metrics loading...

/content/aip/journal/apl/86/19/10.1063/1.1925756
2005-05-03
2014-04-20
Loading

Full text loading...

This is a required field
Please enter a valid email address
752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Stress-driven formation of Si nanowires
http://aip.metastore.ingenta.com/content/aip/journal/apl/86/19/10.1063/1.1925756
10.1063/1.1925756
SEARCH_EXPAND_ITEM