Quality of epitaxial InAs nanowires controlled by catalyst size in molecular beam epitaxy

Zhi Zhang, Zhen Yu Lu, Ping Ping Chen, Hong Yi Xu, Ya Nan Guo, Zhi Ming Liao, Sui Xing Shi, Wei Lu, Jin Zou

Research output: Contribution to journalArticlepeer-review

37 Citations (Scopus)

Abstract

In this study, the structural quality of Au-catalyzed InAs nanowires grown by molecular beam epitaxy is investigated. Through detailed electron microscopy characterizations and analysis of binary Au-In phase diagram, it is found that defect-free InAs nanowires can be induced by smaller catalysts with a high In concentration, while comparatively larger catalysts containing less In induce defected InAs nanowires. This study indicates that the structural quality of InAs nanowires can be controlled by the size of Au catalysts when other growth conditions remain as constants.

Original languageEnglish
Article number073109
JournalApplied Physics Letters
Volume103
Issue number7
DOIs
Publication statusPublished - 12 Aug 2013

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