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Electrical contacts to individual SWCNTs: A review

Owing to their superior electrical characteristics, nanometer dimensions and definable lengths, single-walled carbon nanotubes (SWCNTs) are considered as one of the most promising materials for various types of nanodevices. Additionally, they can be used as either passive or active elements. To be i...

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Detalles Bibliográficos
Autores principales: Liu, Wei, Hierold, Christofer, Haluska, Miroslav
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Beilstein-Institut 2014
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4273271/
https://www.ncbi.nlm.nih.gov/pubmed/25551048
http://dx.doi.org/10.3762/bjnano.5.229
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author Liu, Wei
Hierold, Christofer
Haluska, Miroslav
author_facet Liu, Wei
Hierold, Christofer
Haluska, Miroslav
author_sort Liu, Wei
collection PubMed
description Owing to their superior electrical characteristics, nanometer dimensions and definable lengths, single-walled carbon nanotubes (SWCNTs) are considered as one of the most promising materials for various types of nanodevices. Additionally, they can be used as either passive or active elements. To be integrated into circuitry or devices, they are typically connected with metal leads to provide electrical contacts. The properties and quality of these electrical contacts are important for the function and performance of SWCNT-based devices. Since carbon nanotubes are quasi-one-dimensional structures, contacts to them are different from those for bulk semiconductors. Additionally, some techniques used in Si-based technology are not compatible with SWCNT-based device fabrication, such as the contact area cleaning technique. In this review, an overview of the investigations of metal–SWCNT contacts is presented, including the principle of charge carrier injection through the metal–SWCNT contacts and experimental achievements. The methods for characterizing the electrical contacts are discussed as well. The parameters which influence the contact properties are summarized, mainly focusing on the contact geometry, metal type and the cleanliness of the SWCNT surface affected by the fabrication processes. Moreover, the challenges for widespread application of CNFETs are additionally discussed.
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spelling pubmed-42732712014-12-30 Electrical contacts to individual SWCNTs: A review Liu, Wei Hierold, Christofer Haluska, Miroslav Beilstein J Nanotechnol Review Owing to their superior electrical characteristics, nanometer dimensions and definable lengths, single-walled carbon nanotubes (SWCNTs) are considered as one of the most promising materials for various types of nanodevices. Additionally, they can be used as either passive or active elements. To be integrated into circuitry or devices, they are typically connected with metal leads to provide electrical contacts. The properties and quality of these electrical contacts are important for the function and performance of SWCNT-based devices. Since carbon nanotubes are quasi-one-dimensional structures, contacts to them are different from those for bulk semiconductors. Additionally, some techniques used in Si-based technology are not compatible with SWCNT-based device fabrication, such as the contact area cleaning technique. In this review, an overview of the investigations of metal–SWCNT contacts is presented, including the principle of charge carrier injection through the metal–SWCNT contacts and experimental achievements. The methods for characterizing the electrical contacts are discussed as well. The parameters which influence the contact properties are summarized, mainly focusing on the contact geometry, metal type and the cleanliness of the SWCNT surface affected by the fabrication processes. Moreover, the challenges for widespread application of CNFETs are additionally discussed. Beilstein-Institut 2014-11-21 /pmc/articles/PMC4273271/ /pubmed/25551048 http://dx.doi.org/10.3762/bjnano.5.229 Text en Copyright © 2014, Liu et al. https://creativecommons.org/licenses/by/2.0https://www.beilstein-journals.org/bjnano/termsThis is an Open Access article under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. The license is subject to the Beilstein Journal of Nanotechnology terms and conditions: (https://www.beilstein-journals.org/bjnano/terms)
spellingShingle Review
Liu, Wei
Hierold, Christofer
Haluska, Miroslav
Electrical contacts to individual SWCNTs: A review
title Electrical contacts to individual SWCNTs: A review
title_full Electrical contacts to individual SWCNTs: A review
title_fullStr Electrical contacts to individual SWCNTs: A review
title_full_unstemmed Electrical contacts to individual SWCNTs: A review
title_short Electrical contacts to individual SWCNTs: A review
title_sort electrical contacts to individual swcnts: a review
topic Review
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4273271/
https://www.ncbi.nlm.nih.gov/pubmed/25551048
http://dx.doi.org/10.3762/bjnano.5.229
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