Suppression of Metallic Conductivity of Single-Walled Carbon Nanotubes by Cycloaddition Reactions

作者：Mandakini Kanungo, Helen S. M. Lu, George G. Malliaras, Graciela B. Blanchet · 发表于：Science · 年份：2009 · DOI：10.1126/science.1166087 · 被引用次数：151 · 研究领域：Carbon Nanotubes in Composites、Graphene research and applications、Organic Electronics and Photovoltaics

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.