Electronic Structure Control of Sub-nanometer 1D SnTe via Nanostructuring within Single-Walled Carbon Nanotubes

ACS Nano
Andrij VasylenkoDavid Quigley

Abstract

Nanostructuring, e. g., reduction of dimensionality in materials, offers a viable route toward regulation of materials electronic and hence functional properties. Here, we present the extreme case of nanostructuring, exploiting the capillarity of single-walled carbon nanotubes (SWCNTs) for the synthesis of the smallest possible SnTe nanowires with cross sections as thin as a single atom column. We demonstrate that by choosing the appropriate diameter of a template SWCNT, we can manipulate the structure of the quasi-one-dimensional (1D) SnTe to design electronic behavior. From first principles, we predict the structural re-formations that SnTe undergoes in varying encapsulations and confront the prediction with TEM imagery. To further illustrate the control of physical properties by nanostructuring, we study the evolution of transport properties in a homologous series of models of synthesized and isolated SnTe nanowires varying only in morphology and atomic layer thickness. This extreme scaling is predicted to significantly enhance thermoelectric performance of SnTe, offering a prospect for further experimental studies and future applications.

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Citations

Sep 17, 2019·Physical Chemistry Chemical Physics : PCCP·Gurvinder SinghR K Moudgil
Nov 20, 2020·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Damiano Archetti, Neophytos Neophytou
Mar 11, 2021·ACS Applied Materials & Interfaces·Chao YangYunhao Lu
Apr 30, 2021·Nano Letters·Jiaqi ZhangYoshifumi Oshima
Sep 5, 2019·Journal of the American Chemical Society·Jun-Jie ZhangBoris I Yakobson
Oct 3, 2019·Chemical Reviews·Iann C Gerber, Philippe Serp
Jun 26, 2020·ACS Applied Materials & Interfaces·Junliang LiuWen Lei

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