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Durham University

Department of Engineering

Staff Profile

Publication details for Professor Dagou Zeze

Massey, M.K., Rosamond, M.C., Pearson, C., Zeze, D.A. & Petty, M.C. (2012). Electrical Behavior of Langmuir–Blodgett Networks of Sorted Metallic and Semiconducting Single-Walled Carbon Nanotubes. Langmuir 28(43): 15385-15391.

Author(s) from Durham

Abstract

Langmuir–Blodgett 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 80–350 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–Frenkel conduction is the dominant electrical process at temperatures below 150 K and electric fields of greater than 1 MV m–1. 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 10–3 K–1.