title: Suppression of metallic conductivity of single-walled carbon nanotubes by cycloaddition reactions.
abstract: The high carrier mobility of films of semiconducting single-walled carbon nanotubes (SWNTs) is attractive for electronics applications, but the presence of metallic SWNTs leads to high off-currents in transistor applications. The method presented here, cycloaddition of fluorinated olefins, represents an effective approach toward converting the "as grown" commercial SWNT mats into high-mobility semiconducting tubes with high yield and without further need for carbon nanotube separation. Thin-film transistors, fabricated from percolating arrays of functionalized carbon nanotubes, exhibit mobilities >100 square centimeters per volt-second and on-off ratios of 100,000. This method should allow for the use of semiconducting carbon nanotubes in commercial electronic devices and provide a low-cost route to the fabrication of electronic inks.
authors.affiliation: Cornell University, Department of Material Sciences, Ithaca, NY 14850, USA.
authors.forename: Mandakini
authors.initials: M
authors.lastname: Kanungo
authors.forename: Helen
authors.initials: H
authors.lastname: Lu
authors.forename: George G
authors.initials: GG
authors.lastname: Malliaras
authors.forename: Graciela B
authors.initials: GB
authors.lastname: Blanchet