Electrical properties of multi-walled carbon nanotube/polypyrrole nanocables: percolation-dominated conductivity
文献类型：期刊论文
| 作者 | Long, YZ ; Chen, ZJ ; Zhang, XT ; Zhang, J ; Liu, ZF |
| 刊名 | JOURNAL OF PHYSICS D-APPLIED PHYSICS
 |
| 出版日期 | 2004 |
| 卷号 | 37期号:14页码:1965 |
| 关键词 | PHOTOVOLTAIC DEVICES VIBRATIONAL-SPECTRA LATTICE-DYNAMICS NANOTUBES COMPOSITES POLYPYRROLE TRANSPORT ARRAYS FILMS |
| ISSN号 | 0022-3727 |
| 通讯作者 | Chen, ZJ: Chinese Acad Sci, Inst Phys, Lab Extreme Condit Phys, POB 603, Beijing 100080, Peoples R China. |
| 中文摘要 | A multi-walled carbon nanotube/polypyrrole (CNT/PPy) nanocomposite with cable-like morphology has been synthesized using an in situ chemical oxidative polymerization method. The temperature dependences of the conductivity and magnetoresistance (MR) have been studied. We found that the room temperature conductivity increases by two orders of magnitude with increasing carbon nanotube weight percentage. The temperature dependence of the conductivity follows a charge-energy-limited tunnelling model (ln sigma(T) proportional to T-1/2) and indicates clearly that the CNT weight percentages of 9.1 and 13.04 wt% are below the percolation threshold and 23.1 wt% is beyond the percolation threshold. At low temperatures the 23.1 wt% composite shows a negative MR whereas the pure PPy shows a positive one. The results reveal that at the percolation threshold the complete CNT conductive paths can change and enhance dramatically the electrical properties of the CNT/PPy composites. |
| 收录类别 | SCI |
| 语种 | 英语 |
| 公开日期 | 2013-09-17 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/36948]  |
| 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,Chen, ZJ,Zhang, XT,et al. Electrical properties of multi-walled carbon nanotube/polypyrrole nanocables: percolation-dominated conductivity[J]. JOURNAL OF PHYSICS D-APPLIED PHYSICS,2004,37(14):1965. |
| APA | Long, YZ,Chen, ZJ,Zhang, XT,Zhang, J,&Liu, ZF.(2004).Electrical properties of multi-walled carbon nanotube/polypyrrole nanocables: percolation-dominated conductivity.JOURNAL OF PHYSICS D-APPLIED PHYSICS,37(14),1965. |
| MLA | Long, YZ,et al."Electrical properties of multi-walled carbon nanotube/polypyrrole nanocables: percolation-dominated conductivity".JOURNAL OF PHYSICS D-APPLIED PHYSICS 37.14(2004):1965. |
入库方式： OAI收割
来源：物理研究所
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