Current–Voltage Characteristics in Individual Polypyrrole Nanotube, Poly(3,4-ethylenedioxythiophene) Nanowire, Polyaniline Nanotube, and CdS Nanorope |
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Authors: | Zhi-Hua Yin Yun-Ze Long Chang-Zhi Gu Mei-Xiang Wan Jean-Luc Duvail |
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Affiliation: | (1) College of Physics Science, Qingdao University, Qingdao, 266071, China;(2) Institute of Physics, Chinese Academy of Sciences, Beijing, 100190, China;(3) Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China;(4) Institut des Matériaux Jean Rouxel, Université de Nantes, CNRS, Nantes, 44322, France |
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Abstract: | In this paper, we focus on current–voltage (I–V) characteristics in several kinds of quasi-one-dimensional (quasi-1D) nanofibers to investigate their electronic transport
properties covering a wide temperature range from 300 down to 2 K. Since the complex structures composed of ordered conductive
regions in series with disordered barriers in conducting polymer nanotubes/wires and CdS nanowires, all measured nonlinear
I–V characteristics show temperature and field-dependent features and are well fitted to the extended fluctuation-induced tunneling
and thermal excitation model (Kaiser expression). However, we find that there are surprisingly similar deviations emerged
between the I–V data and fitting curves at the low bias voltages and low temperatures, which can be possibly ascribed to the electron–electron
interaction in such quasi-1D systems with inhomogeneous nanostructures. |
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Keywords: | Conducting polymers I– V characteristics FIT model Nanowires/tubes |
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