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New Dynamic Air-Brush Technique for SWCNTs Deposition: Application to Fabrication of CNTFETs for Electronics and Gas Sensing

Published online by Cambridge University Press:  01 June 2011

P. Bondavalli*
Affiliation:
Nanocarb Lab., Physics Department, Thales Research and Technology, Palaiseau, France
L. Gorintin
Affiliation:
Nanocarb Lab., Physics Department, Thales Research and Technology, Palaiseau, France
P. Legagneux
Affiliation:
Nanocarb Lab., Physics Department, Thales Research and Technology, Palaiseau, France
J.P. Simonato
Affiliation:
LITEN / DTNM / LCH, CEA-Grenoble Grenoble, France.
L. Cailler
Affiliation:
LITEN / DTNM / LCH, CEA-Grenoble Grenoble, France.
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Abstract

This contribution deals with Carbon Nanotubes Field Effect transistors (CNTFETs) based gas sensors fabricated using a completely new dynamic spray based technique (patented) for SWCNTs deposition. The extreme novelty is that our technique is compatible with large surfaces, flexible substrates and allows to fabricate high performances transistors exploiting the percolation effect of the SWCNTs networks achieved with extremely reproducible characteristics. Recently, we have been able to achieve extremely selective measurement of NO2, NH3 and CO using four CNTFETS fabricated using different metals as electrodes, exploiting the specific interaction between gas and metal/SWCNT junctions. In this way we have identify an electronic fingerprinting of the gas detected. The response time is evaluated at less than 30sec.

Information

Type
Research Article
Copyright
Copyright © Materials Research Society 2011

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