Electrical Transport Properties of Multilayered Single-Walled Carbon Nanotube Films. (26th March 2012)

• Record Type: Journal Article
• Authors: Zhao, Yanli; Li, Wenzhi
• Other Names: Mane Rajaram S. Academic Editor.
• Is Part Of: Journal of nanotechnology. Volume 2012(2012)
• Publication Date: 2012-03-26
• Subjects: Nanotechnology -- Periodicals; Nanotechnology; Nanotechnology; Periodicals; Periodicals; 620.5
• DOI: 10.1155/2012/601582
• Languages: English
• ISSNs: 1687-9503

Abstract

Abstract : An improved layer-by-layer vacuum filtration method was adopted for the fabrication of single-walled carbon nanotube (SWCNT) films aiming at a series of SWCNT films with controllable thickness and density. The electrical transport properties of the multilayered SWCNT films have been investigated. With the constant film density, the decrease of the layer number of the SWCNT film results in an increase of the temperature coefficient of resistance (TCR). SWCNT film with 95% metallic nanotubes has shown a lower TCR than that of the SWCNT films with a low percentage of metallic nanotubes. The effect of thermal annealing and subsequent acid (HNO3 ) treatment on the electrical properties of the SWCNT films has also been investigated.