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arXiv · 1304.1388

Substrate-Independent Catalyst-Free Synthesis of High-Purity Bi2Se3 Nanostructures

Jerome T. Mlack·Atikur Rahman·Gary L. Johns·Kenneth J. T. Livi·Nina Markovic
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Abstract

We describe a catalyst-free vapor-solid synthesis of bismuth selenide (Bi2Se3) nanostructures at ambient pressure with hydrogen as a carrier gas. The nanostructures were synthesized on glass, silicon and mica substrates and the method yields a variety of nanostructures: nanowires, nanoribbons, nanoplatelets and nanoflakes. The materials analysis shows high chemical purity in all cases, without sacrificing the crystalline structure of Bi2Se3. Low-temperature measurements of the nanostructures indicate contributions from the surface states with a tunable carrier density. Samples synthesized on flexible mica substrates show no significant change in resistance upon bending, indicating robustness of as-grown Bi2Se3 nanostructures and their suitability for device applications.

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Jerome T. Mlack, Atikur Rahman, Gary L. Johns, Kenneth J. T. Livi, Nina Markovic. 2013-04-04. Substrate-Independent Catalyst-Free Synthesis of High-Purity Bi2Se3 Nanostructures. https://doi.org/10.1063/1.4807121

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