Current-voltage characteristics of individual conducting polymer nanotubes and nanowires

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	Current-voltage characteristics of individual conducting polymer nanotubes and nanowires
	Long Yun-Ze 1; Yin Zhi-Hua 1; Li Meng-Meng 1; Gu Chang-Zhi 2; Duvail Jean-Luc 3; Jin Ai-Zi 2; Wan Mei-Xiang 4
刊名	CHINESE PHYSICS B
	2009-06-01
卷号	18 期号:6 页码:2514-2522
关键词	Conducting Polymers I-v Curves Nanotubes/wires
ISSN号	1674-1056
英文摘要	We report the current-voltage (I-V) characteristics of individual polypyrrole nanotubes and poly(3,4-ethylenedioxythiophene) (PEDOT) nanowires in a temperature range from 300 K to 2 K. Considering the complex structures of such quasi-one-dimensional systems with an array of ordered conductive regions separated by disordered barriers, we use the extended fluctuation-induced tunneling (FIT) and thermal excitation model (Kaiser expression) to fit the temperature and electric-field dependent I-V curves. It is found that the I-V data measured at higher temperatures or higher voltages can be well fitted by the Kaiser expression. However, the low-temperature data around the zero bias clearly deviate from those obtained from this model. The deviation (or zero-bias conductance suppression) could be possibly ascribed to the occurrence of the Coulomb-gap in the density of states near the Femi level and/or the enhancement of electron-electron interaction resulting from nanosize effects, which have been revealed in the previous studies on low-temperature electronic transport in conducting polymer films, pellets and nanostructures. In addition, similar I-V characteristics and deviation are also observed in an isolated K0.27MnO2 nanowire.
语种	英语
出版者	IOP PUBLISHING LTD
WOS记录号	WOS:000266577300066
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/68385]
专题	中国科学院化学研究所
通讯作者	Long Yun-Ze
作者单位	1.Qingdao Univ, Coll Phys Sci, Qingdao 266071, Peoples R China 2.Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China 3.Univ Nantes, CNRS, Inst Mat Jean Rouxel, F-44322 Nantes, France 4.Chinese Acad Sci, Inst Chem, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Long Yun-Ze,Yin Zhi-Hua,Li Meng-Meng,et al. Current-voltage characteristics of individual conducting polymer nanotubes and nanowires[J]. CHINESE PHYSICS B,2009,18(6):2514-2522.
APA	Long Yun-Ze.,Yin Zhi-Hua.,Li Meng-Meng.,Gu Chang-Zhi.,Duvail Jean-Luc.,...&Wan Mei-Xiang.(2009).Current-voltage characteristics of individual conducting polymer nanotubes and nanowires.CHINESE PHYSICS B,18(6),2514-2522.
MLA	Long Yun-Ze,et al."Current-voltage characteristics of individual conducting polymer nanotubes and nanowires".CHINESE PHYSICS B 18.6(2009):2514-2522.