Doping incorporation paths in catalyst-free Be-doped GaAs nanowires

Abstract

The incorporation paths of Be in GaAs nanowires grown by the Ga-assisted method in molecular beam epitaxy has been investigated by electrical measurements of nanowires with different doping profiles. We find that Be atoms incorporate preferentially via the nanowire side facets, while the incorporation path through the Ga droplet is negligible. We also demonstrate that Be can diffuse into the volume of the nanowire giving an alternative incorporation path. This work is an important step towards controlled doping of nanowires and will serve as a help for designing future devices based on nanowires.

arXiv comment4 pages, 4 figures

References in corpus (1)

• Poole-Frenkel Effect and Phonon-Assisted Tunneling in GaAs Nanowires

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