Realization of vertically aligned, ultra-high aspect ratio InAsSb nanowires on graphite

Anyebe, Ezekiel and Sanchez, Ana and Hindmarsh, S. and Chen, X. and Shao, J. and Rajpalke, Mohana K. and Veal, Tim D. and Robinson, Benjamin and Kolosov, Oleg and Anderson, Frazer and Sandaram, R. and Wang, Z. M. and Falko, Vladimir and Zhuang, Qiandong (2015) Realization of vertically aligned, ultra-high aspect ratio InAsSb nanowires on graphite. Nano Letters, 15 (7). pp. 4348-4355. ISSN 1530-6984

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The monolithic integration of InAs1–xSbx semiconductor nanowires on graphitic substrates holds enormous promise for cost-effective, high-performance, and flexible devices in optoelectronics and high-speed electronics. However, the growth of InAs1–xSbx nanowires with high aspect ratio essential for device applications is extremely challenging due to Sb-induced suppression of axial growth and enhancement in radial growth. We report the realization of high quality, vertically aligned, nontapered and ultrahigh aspect ratio InAs1–xSbx nanowires with Sb composition (xSb(%)) up to ∼12% grown by indium-droplet assisted molecular beam epitaxy on graphite substrate. Low temperature photoluminescence measurements show that the InAs1–xSbx nanowires exhibit bright band-to-band related emission with a distinct redshift as a function of Sb composition providing further confirmation of successful Sb incorporation in as-grown nanowires. This study reveals that the graphite substrate is a more favorable platform for InAs1–xSbx nanowires that could lead to hybrid heterostructures possessing potential device applications in optoelectronics.

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Journal Article
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Nano Letters
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Post Print: “This document is the Accepted Manuscript version of a Published Work that appeared in final form in Nano Letters, copyright © 2015 American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see
Uncontrolled Keywords:
?? inassbnanowireself-catalyzedmolecular beam epitaxyvan der waalsaspect ratiographitegraphenebioengineeringmaterials science(all)chemistry(all)mechanical engineeringcondensed matter physics ??
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21 Oct 2015 04:57
Last Modified:
14 Nov 2023 00:16