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Electrical transport properties of single wall carbon nanotube/polyurethane composite based field effect transistors fabricated by UV-assisted direct-writing technology

Brahim Aïssa, Daniel Therriault, Rouhollah Dermanaki Farahani, Louis Laberge Lebel, My Ali El Khakani

Article (2012)

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Abstract

We report on the fabrication and transport properties of single-walled carbon nanotube (SWCNT)/polyurethane (PU) nanocomposite microfiber-based field effect transistors (FETs). UV-assisted direct-writing technology was used, and microfibers consisting of cylindrical micro-rods, having different diameters and various SWCNT loads, were fabricated directly onto SiO₂/Si substrates in a FET scheme. The room temperature dc electrical conductivities of these microfibers were shown to increase with respect to the SWCNT concentrations in the nanocomposite, and were about ten orders of magnitude higher than that of the pure polyurethane, when the SWCNT load ranged from 0.1 to 2.5 wt% only. Our results show that for SWCNT loads ≤ 1.5 wt%, all the microfibers behave as a FET with p-type transport. The resulting FET exhibited excellent performance, with an I on/I off ratio of 105 and a maximum on-state current (I on) exceeding 70 µA. Correlations between the FET performance, SWCNTs concentration, and the microfiber diameters are also discussed.
Additional Information: Titre du manuscrit: UV-assisted direct-writing fabrication and electrical properties of microfibre SWCNT/polyurethane nanocomposite based field effect transistors.
Subjects: 2000 Materials science and technology > 2001 Materials structure, properties and testing
2000 Materials science and technology > 2002 Materials processing/fabrication
3150 Theoretical physics and chemistry > 3151 Kinetic and transport theory of fluids, physical properties of gases
Department: Department of Mechanical Engineering
Research Center: CREPEC - Center for Applied Research on Polymers and Composites
Funders: CRSNG/NSERC, Fonds Québécois de la Recherche sur la Nature et les Technologies (FQRNT), Québec Research Network in nanoscience and nanotechnology (NanoQuébec)
PolyPublie URL: https://publications.polymtl.ca/10384/
Journal Title: Nanotechnology (vol. 23, no. 11)
Publisher: IOP Publishing Ltd
DOI: 10.1088/0957-4484/23/11/115705
Official URL: https://doi.org/10.1088/0957-4484/23/11/115705
Date Deposited: 07 Jul 2022 14:30
Last Modified: 18 Nov 2022 23:47
Cite in APA 7: Aïssa, B., Therriault, D., Farahani, R. D., Laberge Lebel, L., & El Khakani, M. A. (2012). Electrical transport properties of single wall carbon nanotube/polyurethane composite based field effect transistors fabricated by UV-assisted direct-writing technology. Nanotechnology, 23(11), 115705 (8 pages). https://doi.org/10.1088/0957-4484/23/11/115705

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