Current–Voltage Characteristics in Individual Polypyrrole Nanotube, Poly(3,4-ethylenedioxythiophene) Nanowire, Polyaniline Nanotube, and CdS Nanorope
2008; Springer Science+Business Media; Volume: 4; Issue: 1 Linguagem: Inglês
10.1007/s11671-008-9203-8
ISSN1931-7573
AutoresZhihua Yin, Yun‐Ze Long, Chang-Zhi Gu, Meixiang Wan, Jean‐Luc Duvail,
Tópico(s)Quantum Dots Synthesis And Properties
ResumoAbstract 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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