Electrical Conductivity Studies on Individual Conjugated Polymer Nanowires: Two-Probe and Four-Probe Results

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	Electrical Conductivity Studies on Individual Conjugated Polymer Nanowires: Two-Probe and Four-Probe Results
	Long, YZ ; Duvail, JL ; Li, MM ; Gu, CZ ; Liu, ZW ; Ringer, SP
刊名	NANOSCALE RESEARCH LETTERS
	2010
卷号	5 期号:1 页码:237
关键词	CURRENT-VOLTAGE CHARACTERISTICS POLYANILINE NANOTUBE POLYPYRROLE NANOTUBE TRANSPORT-PROPERTIES PEDOT NANOWIRES CARBON NANOTUBE NANOSTRUCTURES FABRICATION MICROSCOPE NANOFIBERS
ISSN号	1931-7573
通讯作者	Long, YZ: Qingdao Univ, Coll Phys Sci, Qingdao 266071, Peoples R China.
中文摘要	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(4) Omega 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.
收录类别	SCI
资助信息	National Natural Science Foundation of China [10604038]; New Century Excellent Talents in University of China [NCET-07-0472]; Communaute urbaine de Nantes, France
语种	英语
公开日期	2013-09-17
内容类型	期刊论文
源URL	[http://ir.iphy.ac.cn/handle/311004/36932]
专题	物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文
推荐引用方式 GB/T 7714	Long, YZ,Duvail, JL,Li, MM,et al. Electrical Conductivity Studies on Individual Conjugated Polymer Nanowires: Two-Probe and Four-Probe Results[J]. NANOSCALE RESEARCH LETTERS,2010,5(1):237.
APA	Long, YZ,Duvail, JL,Li, MM,Gu, CZ,Liu, ZW,&Ringer, SP.(2010).Electrical Conductivity Studies on Individual Conjugated Polymer Nanowires: Two-Probe and Four-Probe Results.NANOSCALE RESEARCH LETTERS,5(1),237.
MLA	Long, YZ,et al."Electrical Conductivity Studies on Individual Conjugated Polymer Nanowires: Two-Probe and Four-Probe Results".NANOSCALE RESEARCH LETTERS 5.1(2010):237.