Morphological control of SnTe nanostructures by tuning catalyst composition

Zou, Yichao, Chen, Zhigang, Lin, Jing, Zhou, Xiaohao, Lu, Wei, Drennan, John and Zou, Jin (2015) Morphological control of SnTe nanostructures by tuning catalyst composition. Nano Research, 8 9: 3011-3019. doi:10.1007/s12274-015-0806-y


Author Zou, Yichao
Chen, Zhigang
Lin, Jing
Zhou, Xiaohao
Lu, Wei
Drennan, John
Zou, Jin
Title Morphological control of SnTe nanostructures by tuning catalyst composition
Journal name Nano Research   Check publisher's open access policy
ISSN 1998-0000
1998-0124
Publication date 2015-08-06
Sub-type Article (original research)
DOI 10.1007/s12274-015-0806-y
Open Access Status Not Open Access
Volume 8
Issue 9
Start page 3011
End page 3019
Total pages 9
Place of publication Beijing, China
Publisher Tsinghua University Press
Collection year 2016
Language eng
Formatted 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.
Keyword Catalyst composition
Chemical vapor deposition
Morphology
Thermoelectrics
Tin telluride
Topological insulator
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Mechanical & Mining Engineering Publications
Official 2016 Collection
 
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