Current-voltage characteristics of individual conducting polymer nanotubes and nanowires
| العنوان: | Current-voltage characteristics of individual conducting polymer nanotubes and nanowires |
|---|---|
| المؤلفون: | Gu Chang-Zhi, Wan Mei-Xiang, Yin Zhi-Hua, Jin Ai-Zi, Long Yun-Ze, Duvail Jean-Luc, Li Meng-Meng |
| المصدر: | ResearcherID |
| بيانات النشر: | IOP Publishing, 2009. |
| سنة النشر: | 2009 |
| مصطلحات موضوعية: | Conductive polymer, Materials science, Condensed matter physics, Nanowire, General Physics and Astronomy, Conductance, Nanotechnology, 02 engineering and technology, Atmospheric temperature range, 021001 nanoscience & nanotechnology, Polypyrrole, 01 natural sciences, chemistry.chemical_compound, chemistry, PEDOT:PSS, 0103 physical sciences, Density of states, 010306 general physics, 0210 nano-technology, Excitation |
| الوصف: | We report the current-voltage (I{V ) characteristics of individual polypyrrole nanotubes and poly(3,4ethylenedioxythiophene) (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 ∞uctuation-induced tunneling (FIT) and thermal excitation model (Kaiser expression) to flt the temperature and electric-fleld dependent I{V curves. It is found that the I{V data measured at higher temperatures or higher voltages can be well fltted 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 efiects, which have been revealed in the previous studies on low-temperature electronic transport in conducting polymer fllms, pellets and nanostructures. In addition, similar I{V characteristics and deviation are also observed in an isolated K0:27MnO2 nanowire. |
| تدمد: | 1674-1056 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9d05cdce41a7fa3e44fadbf24cd9676d https://doi.org/10.1088/1674-1056/18/6/066 |
| رقم الأكسشن: | edsair.doi.dedup.....9d05cdce41a7fa3e44fadbf24cd9676d |
| قاعدة البيانات: | OpenAIRE |
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