Electrical Transport and Field-Effect Transistors Using Inkjet-Printed SWCNT Films Having Different Functional Side Groups

The electrical properties of random networks of single-wall carbon nanotubes (SWNTs) obtained by inkjet printing are studied. Water-based stable inks of functionalized SWNTs (carboxylic acid, amide, poly(ethylene glycol), and polyaminobenzene sulfonic acid) were prepared and applied to inkjet deposi...

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Bibliographic Details
Published in:ACS nano 2010-06, Vol.4 (6), p.3318-3324
Main Authors: Gracia-Espino, Eduardo, Sala, Giovanni, Pino, Flavio, Halonen, Niina, Luomahaara, Juho, Mäklin, Jani, Tóth, Géza, Kordás, Krisztián, Jantunen, Heli, Terrones, Mauricio, Helistö, Panu, Seppä, Heikki, Ajayan, Pulickel M, Vajtai, Robert
Format: Article
Language:English
Subjects:
Computer Peripherals
Crystallization - methods
Electric Conductivity
Electron Transport
Equipment Design
Equipment Failure Analysis
Macromolecular Substances - chemistry
Materials Testing
Molecular Conformation
Nanostructures - chemistry
Nanostructures - ultrastructure
Nanotechnology - instrumentation
Particle Size
Surface Properties
Transistors, Electronic
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Summary:The electrical properties of random networks of single-wall carbon nanotubes (SWNTs) obtained by inkjet printing are studied. Water-based stable inks of functionalized SWNTs (carboxylic acid, amide, poly(ethylene glycol), and polyaminobenzene sulfonic acid) were prepared and applied to inkjet deposit microscopic patterns of nanotube films on lithographically defined silicon chips with a back-side gate arrangement. Source−drain transfer characteristics and gate-effect measurements confirm the important role of the chemical functional groups in the electrical behavior of carbon nanotube networks. Considerable nonlinear transport in conjunction with a high channel current on/off ratio of ∼70 was observed with poly(ethylene glycol)-functionalized nanotubes. The positive temperature coefficient of channel resistance shows the nonmetallic behavior of the inkjet-printed films. Other inkjet-printed field-effect transistors using carboxyl-functionalized nanotubes as source, drain, and gate electrodes, poly(ethylene glycol)-functionalized nanotubes as the channel, and poly(ethylene glycol) as the gate dielectric were also tested and characterized.
ISSN:1936-0851
1936-086X
DOI:10.1021/nn1000723