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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...
Autores principales: | , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Beilstein-Institut
2014
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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. |
format | Online Article Text |
id | pubmed-4273271 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2014 |
publisher | Beilstein-Institut |
record_format | MEDLINE/PubMed |
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 |
work_keys_str_mv | AT liuwei electricalcontactstoindividualswcntsareview AT hieroldchristofer electricalcontactstoindividualswcntsareview AT haluskamiroslav electricalcontactstoindividualswcntsareview |