Publication result detail

Catalyst–substrate interaction and growth delay in vapor–liquid–solid nanowire growth

KOLÍBAL, M.; PEJCHAL, T.; MUSÁLEK, T.; ŠIKOLA, T.

Original Title

Catalyst–substrate interaction and growth delay in vapor–liquid–solid nanowire growth

English Title

Catalyst–substrate interaction and growth delay in vapor–liquid–solid nanowire growth

Type

WoS Article

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.

English 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

Key words in English

nanowire, Ge, vapor–liquid–solid growth, MBE, nucleation, incubation time

Authors

KOLÍBAL, M.; PEJCHAL, T.; MUSÁLEK, T.; ŠIKOLA, T.

RIV year

2019

Released

26.03.2018

Publisher

IOP Publishing

ISBN

0957-4484

Periodical

NANOTECHNOLOGY

Volume

29

Number

20

State

United Kingdom of Great Britain and Northern Ireland

Pages from

1

Pages to

7

Pages count

7

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"
}

Documents

Catalyst-substrate postprint