Morphological control of SnTe nanostructures by tuning catalyst composition

Zou, Yichao and Chen, Zhigang ORCID: https://orcid.org/0000-0002-9309-7993 and Lin, Jing and Zhou, Xiaohao and Lu, Wei and Drennan, John and Zou, Jin (2015) Morphological control of SnTe nanostructures by tuning catalyst composition. Nano Research, 8 (9). pp. 3011-3019. ISSN 1998-0124


Abstract

A method of controlling the morphology of SnTe nanostructures produced by a simple chemical vapor deposition is presented, in which Au-containing catalysts with different Au concentrations are used to induce specific growth behavior. Triangular SnTe nanoplates with a {100} dominated surface and {100}, {111} and {120} side facets were induced by AuSn catalysts, whereas <010> SnTe nanowires with four nonpolar {100} side-facets were produced using Au5Sn catalysts. Through detailed structural and chemical characterization, coupled with surface energy calculations, it is found that nanowire growth is thermodynamically controlled via a vapor-solid-solid growth mechanism, whereas nanoplate growth is kinetically controlled via a vapor-liquid-solid growth mechanism. Therefore, this study provides a fundamental understanding of the catalyst’s role in the growth of IV-VI compound nanostructures.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Published version cannot be displayed due to copyright restrictions.
Faculty/School / Institute/Centre: No Faculty
Faculty/School / Institute/Centre: No Faculty
Date Deposited: 09 Jun 2017 05:31
Last Modified: 27 Jun 2017 02:25
Uncontrolled Keywords: catalyst composition; chemical vapor deposition; morphology; thermoelectrics; tin telluride; topological insulator
Fields of Research (2008): 03 Chemical Sciences > 0303 Macromolecular and Materials Chemistry > 030302 Nanochemistry and Supramolecular Chemistry
Socio-Economic Objectives (2008): E Expanding Knowledge > 97 Expanding Knowledge > 970103 Expanding Knowledge in the Chemical Sciences
Identification Number or DOI: https://doi.org/10.1007/s12274-015-0806-y
URI: http://eprints.usq.edu.au/id/eprint/31681

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