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Sn-Seeded GaAs Nanowires as Self-Assembled Radial p-n Junctions.


ABSTRACT: The widespread use of Au as a seed particle in the fabrication of semiconductor nanowires presents a fundamental limitation to the potential incorporation of such nanostructures into electronic devices. Although several other growth techniques have been demonstrated, the use of alternative seed particle metals remains an underexplored but potentially very promising way to influence the properties of the resulting nanowires while simultaneously avoiding gold. In this Letter, we demonstrate the use of Sn as a seed particle metal for GaAs nanowires grown by metal-organic vapor phase epitaxy. We show that vertically aligned and stacking defect-free GaAs nanowires can be grown with very high yield. The resulting nanowires exhibit Esaki diode behavior, attributed to very high n-doping of the nanowire core with Sn, and simultaneous C-doping of the radial overgrowth. These results demonstrate that the use of alternative seed particle metals is a potentially important area to explore for developing nanowire materials with controlled material properties.

SUBMITTER: Sun R 

PROVIDER: S-EPMC4826023 | biostudies-literature | 2015 Jun

REPOSITORIES: biostudies-literature

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Sn-Seeded GaAs Nanowires as Self-Assembled Radial p-n Junctions.

Sun Rong R   Jacobsson Daniel D   Chen I-Ju IJ   Nilsson Malin M   Thelander Claes C   Lehmann Sebastian S   Dick Kimberly A KA  

Nano letters 20150601 6


The widespread use of Au as a seed particle in the fabrication of semiconductor nanowires presents a fundamental limitation to the potential incorporation of such nanostructures into electronic devices. Although several other growth techniques have been demonstrated, the use of alternative seed particle metals remains an underexplored but potentially very promising way to influence the properties of the resulting nanowires while simultaneously avoiding gold. In this Letter, we demonstrate the us  ...[more]

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