Electrical Behavior of Langmuir鈥揃lodgett Networks of Sorted Metallic and Semiconducting Single-Walled Carbon Nanotubes

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• 作者：Mark K. Massey ; Mark C. Rosamond ; Christopher Pearson ; Dagou A. Zeze ; Michael C. Petty
• 刊名：Langmuir
• 出版年：2012
• 出版时间：October 30, 2012
• 年：2012
• 卷：28
• 期：43
• 页码：15385-15391
• 全文大小：495K
• 年卷期：v.28,no.43(October 30, 2012)
• ISSN：1520-5827

文摘

Langmuir鈥揃lodgett deposition has been used to form thin film networks of both metallic and semiconducting single-walled carbon nanotubes. These have been investigated to understand their physical, optical, and morphological properties. The electrical conductivities over the temperature range 80鈥?50 K and across electrode gaps of 220 nm and 2 mm have been explored. In the case of semiconducting tubes, the results suggest that Poole鈥揊renkel conduction is the dominant electrical process at temperatures below 150 K and electric fields of greater than 1 MV m^鈥?. Metallic nanotube networks exhibit a decrease in resistance with a reduction in temperature. This can be approximated by a linear relationship, giving a temperature coefficient of resistance of 10^鈥? K^鈥?.