Electrical Conductivity Studies on Individual Conjugated Polymer Nanowires: Two-Probe and Four-Probe Results
<p>Abstract</p> <p>Two- and four-probe electrical measurements on individual conjugated polymer nanowires with different diameters ranging from 20 to 190 nm have been performed to study their conductivity and nanocontact resistance. The two-probe results reveal that all the measure...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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SpringerOpen
2009-01-01
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| Series: | Nanoscale Research Letters |
| Subjects: | |
| Online Access: | http://dx.doi.org/10.1007/s11671-009-9471-y |
| _version_ | 1797705974608297984 |
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| author | Duvail JeanLuc Liu Zongwen Ringer Simon Gu Changzhi Long YunZe Li MengMeng |
| author_facet | Duvail JeanLuc Liu Zongwen Ringer Simon Gu Changzhi Long YunZe Li MengMeng |
| author_sort | Duvail JeanLuc |
| collection | DOAJ |
| description | <p>Abstract</p> <p>Two- and four-probe electrical measurements on individual conjugated polymer nanowires with different diameters ranging from 20 to 190 nm have been performed to study their conductivity and nanocontact resistance. The two-probe results reveal that all the measured polymer nanowires with different diameters are semiconducting. However, the four-probe results show that the measured polymer nanowires with diameters of 190, 95–100, 35–40 and 20–25 nm are lying in the insulating, critical, metallic and insulting regimes of metal–insulator transition, respectively. The 35–40 nm nanowire displays a metal–insulator transition at around 35 K. In addition, it was found that the nanocontact resistance is in the magnitude of 10<sup>4</sup>Ω at room temperature, which is comparable to the intrinsic resistance of the nanowires. These results demonstrate that four-probe electrical measurement is necessary to explore the intrinsic electronic transport properties of isolated nanowires, especially in the case of metallic nanowires, because the metallic nature of the measured nanowires may be coved by the nanocontact resistance that cannot be excluded by a two-probe technique.</p> |
| first_indexed | 2024-03-12T05:44:20Z |
| format | Article |
| id | doaj.art-3d95d4fcc1f54ad08354ba62bbf6d566 |
| institution | Directory Open Access Journal |
| issn | 1931-7573 1556-276X |
| language | English |
| last_indexed | 2024-03-12T05:44:20Z |
| publishDate | 2009-01-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Nanoscale Research Letters |
| spelling | doaj.art-3d95d4fcc1f54ad08354ba62bbf6d5662023-09-03T05:42:48ZengSpringerOpenNanoscale Research Letters1931-75731556-276X2009-01-0151237242Electrical Conductivity Studies on Individual Conjugated Polymer Nanowires: Two-Probe and Four-Probe ResultsDuvail JeanLucLiu ZongwenRinger SimonGu ChangzhiLong YunZeLi MengMeng<p>Abstract</p> <p>Two- and four-probe electrical measurements on individual conjugated polymer nanowires with different diameters ranging from 20 to 190 nm have been performed to study their conductivity and nanocontact resistance. The two-probe results reveal that all the measured polymer nanowires with different diameters are semiconducting. However, the four-probe results show that the measured polymer nanowires with diameters of 190, 95–100, 35–40 and 20–25 nm are lying in the insulating, critical, metallic and insulting regimes of metal–insulator transition, respectively. The 35–40 nm nanowire displays a metal–insulator transition at around 35 K. In addition, it was found that the nanocontact resistance is in the magnitude of 10<sup>4</sup>Ω at room temperature, which is comparable to the intrinsic resistance of the nanowires. These results demonstrate that four-probe electrical measurement is necessary to explore the intrinsic electronic transport properties of isolated nanowires, especially in the case of metallic nanowires, because the metallic nature of the measured nanowires may be coved by the nanocontact resistance that cannot be excluded by a two-probe technique.</p>http://dx.doi.org/10.1007/s11671-009-9471-yNanowiresConductivityNanocontact resistanceConducting polymersTemplate synthesis |
| spellingShingle | Duvail JeanLuc Liu Zongwen Ringer Simon Gu Changzhi Long YunZe Li MengMeng Electrical Conductivity Studies on Individual Conjugated Polymer Nanowires: Two-Probe and Four-Probe Results Nanoscale Research Letters Nanowires Conductivity Nanocontact resistance Conducting polymers Template synthesis |
| title | Electrical Conductivity Studies on Individual Conjugated Polymer Nanowires: Two-Probe and Four-Probe Results |
| title_full | Electrical Conductivity Studies on Individual Conjugated Polymer Nanowires: Two-Probe and Four-Probe Results |
| title_fullStr | Electrical Conductivity Studies on Individual Conjugated Polymer Nanowires: Two-Probe and Four-Probe Results |
| title_full_unstemmed | Electrical Conductivity Studies on Individual Conjugated Polymer Nanowires: Two-Probe and Four-Probe Results |
| title_short | Electrical Conductivity Studies on Individual Conjugated Polymer Nanowires: Two-Probe and Four-Probe Results |
| title_sort | electrical conductivity studies on individual conjugated polymer nanowires two probe and four probe results |
| topic | Nanowires Conductivity Nanocontact resistance Conducting polymers Template synthesis |
| url | http://dx.doi.org/10.1007/s11671-009-9471-y |
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