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KOLÍBAL, M. PEJCHAL, T. MUSÁLEK, T. ŠIKOLA, T.
Original Title
Catalyst–substrate interaction and growth delay in vapor–liquid–solid nanowire growth
Type
journal article in Web of Science
Language
English
Original Abstract
Understanding of the initial stage of nanowire growth on a bulk substrate is crucial for the rational design of nanowire building blocks in future electronic and optoelectronic devices. Here, we provide in situ scanning electron microscopy and Auger microscopy analysis of the initial stage of Au-catalyzed Ge nanowire growth on different substrates. Real-time microscopy imaging and elementally resolved spectroscopy clearly show that the catalyst dissolves the underlying substrate if held above a certain temperature. If the substrate dissolution is blocked (or in the case of heteroepitaxy) the catalyst needs to be filled with nanowire material from the external supply, which significantly increases the initial growth delay. The experiments presented here reveal the important role of the substrate in metal-catalyzed nanowire growth and pave the way for different growth delay mitigation strategies.
Keywords
nanowire, Ge, vapor–liquid–solid growth, MBE, nucleation, incubation time
Authors
KOLÍBAL, M.; PEJCHAL, T.; MUSÁLEK, T.; ŠIKOLA, T.
Released
26. 3. 2018
Publisher
IOP Publishing
ISBN
0957-4484
Periodical
NANOTECHNOLOGY
Year of study
29
Number
20
State
United Kingdom of Great Britain and Northern Ireland
Pages from
1
Pages to
7
Pages count
URL
http://iopscience.iop.org/article/10.1088/1361-6528/aab474
Full text in the Digital Library
http://hdl.handle.net/11012/138388
BibTex
@article{BUT146811, author="Miroslav {Kolíbal} and Tomáš {Pejchal} and Tomáš {Musálek} and Tomáš {Šikola}", title="Catalyst–substrate interaction and growth delay in vapor–liquid–solid nanowire growth", journal="NANOTECHNOLOGY", year="2018", volume="29", number="20", pages="1--7", doi="10.1088/1361-6528/aab474", issn="0957-4484", url="http://iopscience.iop.org/article/10.1088/1361-6528/aab474" }