New Method Developed For Making Nanotube Transistor Arrays

New Method Developed For Making Nanotube Transistor Arrays.

Technology Review (11/23) reports that "researchers at the University of Southern California have demonstrated large, functional arrays of transistors made using simple methods from batches of carbon nanotubes that are relatively impure." The USC engineers have developed a method for creating "large arrays of carbon nanotube transistors using solution-processing techniques at room temperature," and "so far, they've built a prototype device on a four-inch silicon wafer and used it to control a simple organic light-emitting diode display." While "other researchers have made transistors from nanotube carpets using solution-processing...these projects started from mixtures of conducting and semiconducting nanotubes." According to one researcher, "the significance of the USC work is that it shows that arrays made from only 95 percent semiconducting nanotubes that aren't aligned still have good enough performance for displays."