Title: Organic thin-film transistors based on conjugated polymer/carbon nanotube composites

Authors: Ye Gan, C.M. Li, Jie Zhang, Dan Gamota

Addresses: School of Chemical and Biomedical Engineering, Nanyang Technological University, 639798 Singapore. ' School of Chemical and Biomedical Engineering, Nanyang Technological University, 639798 Singapore. ' PRRC, Motorola Labs, 1301 E. Algonquin Road, Schaumburg, IL 60196, USA. ' PRRC, Motorola Labs, 1301 E. Algonquin Road, Schaumburg, IL 60196, USA

Abstract: Thin film transistors (TFTs) were fabricated from poly(3-hexylthiophene) (P3HT)/carbon nanotubes (CNTs) composite as the active materials. Single walled CNTs were dispersed into a P3HT/chloroform solution. By drop casting, the composite solution was deposited onto the pre-fabricated device and formed a thin active layer for a TFT. The effect of different concentrations of CNTs on the charge carrier mobility of the composite was studied. A low ratio of CNT to the active material could significantly improve the carrier mobility while the on/off ratio was not reduced.

Keywords: OTFT; P3HT; SWNT; charge mobility; thin film transistors; polymer-carbon composites; nanotube composites; nanotubes; nanotechnology; drop casting.

DOI: 10.1504/IJNT.2007.013978

International Journal of Nanotechnology, 2007 Vol.4 No.4, pp.441 - 449

Published online: 05 Jun 2007 *

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