Water-vapor effect on the electrical conductivity of a single-walled carbon nanotube mat

High electrical conductance enhancement in Au-nanoparticle decorated sparse single-wall carbon nanotube networks

“…Oxygen-exposed networks have p-type characteristics due to transfer of 0.1e -in the charge transfer complex C + -O 2 -  7 ; subsequent adsorption of an electron from donor-like molecules will induce an increase of the resistance and the interaction with acceptor-like molecules will lead to a decrease of the resistance. In air-exposed networks, water molecules are donor-like and serve to compensate the electron acceptor effect of oxygen content [8][9][10]. Consequently, the gas exposure history of a nanotube networks plays a critical role in determining the value of room temperature sheet resistance.…”

Ab initio study of the effect of water adsorption on the carbon nanotube field-effect transistor

“…[7][8][9] The effect of adsorption should be investigated in detail for the further development of the CNTFET as a gas sensor as well as a nanoscale electronic device. [10][11][12][13] The effect of water or humidity on the CNTFET performance has been investigated experimentally as well as theoretically, but still remains arguable. 14 In the transfer character measurement of the CNTFET, the hysteresis in I-V g curves has been commonly observed.…”

Room temperature vanadium dioxide–carbon nanotube gas sensors made via continuous hydrothermal flow synthesis

“…6a). The sensitivity of carbon nanotubes to water vapour is well reported [66][67][68] . As the nanotubes contribute significantly towards conduction in the composites, any interactions inducing changes in conductance of the tubes, will have a large overall effect on the resistance of the sensor, which may have been the cause of the larger responses to water.…”