Please use this identifier to cite or link to this item:
http://dr.iiserpune.ac.in:8080/xmlui/handle/123456789/3508
Title: | Electronic properties of (Sb;Bi)2Te3 colloidal heterostructured nanoplates down to the single particle level |
Authors: | MIR, WASIM J. Assouline, Alexandre Livache, Clement Martinez, Bertille Goubet, Nicolas Zhen, Xiang Xu, Gilles Patriarche Ithurria, Sandrine Aubin, Herve Lhuillier, Emmanuel Dept. of Physics |
Keywords: | Single particle level Electronic properties Colloidal heterostructured Nanoplates Bismuth and antimony 2017 |
Issue Date: | Aug-2017 |
Publisher: | Nature Publishing Group |
Citation: | Scientific Reports, 7, 9647. |
Abstract: | We investigate the potential use of colloidal nanoplates of Sb2Te3 by conducting transport on single particle with in mind their potential use as 3D topological insulator material. We develop a synthetic procedure for the growth of plates with large lateral extension and probe their infrared optical and transport properties. These two properties are used as probe for the determination of the bulk carrier density and agree on a value in the 2–3 × 1019 cm−3 range. Such value is compatible with the metallic side of the Mott criterion which is also confirmed by the weak thermal dependence of the conductance. By investigating the transport at the single particle level we demonstrate that the hole mobility in this system is around 40 cm2V−1s−1. For the bulk material mixing n-type Bi2Te3 with the p-type Sb2Te3 has been a successful way to control the carrier density. Here we apply this approach to the case of colloidally obtained nanoplates by growing a core-shell heterostructure of Sb2Te3/Bi2Te3 and demonstrates a reduction of the carrier density by a factor 2.5. |
URI: | http://dr.iiserpune.ac.in:8080/xmlui/handle/123456789/3508 https://doi.org/10.1038/s41598-017-09903-w |
ISSN: | 2045-2322 |
Appears in Collections: | JOURNAL ARTICLES |
Files in This Item:
There are no files associated with this item.
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.