Morphological control of SnTe nanostructures by tuning catalyst composition

Zou, Yichao and Chen, Zhigang 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.


Statistics for USQ ePrint 31681
Statistics for this ePrint Item
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 / Department / School: 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 : 03 Chemical Sciences > 0303 Macromolecular and Materials Chemistry > 030302 Nanochemistry and Supramolecular Chemistry
Socio-Economic Objective: E Expanding Knowledge > 97 Expanding Knowledge > 970103 Expanding Knowledge in the Chemical Sciences
Identification Number or DOI: 10.1007/s12274-015-0806-y
URI: http://eprints.usq.edu.au/id/eprint/31681

Actions (login required)

View Item Archive Repository Staff Only