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Carbon Nanotubes
Carbon nanotube is a new material made of carbon molecules that was discovered in 1991 by Sumio Iijima, a Senior Research Fellow at NEC. Depending on their diameter, type of spiral, and other characteristics, the electrical characteristics of carbon nanotubes(CNT) can be either those of conductors or semiconductors, opening up vast potential for application in electronics and other fields. Carbon nanohorns(CNH), which are a type of carbon nanotubes, also show promise for application in fields such as energy and medical services thanks to their unique surface structure and chemical stability.
Carbon nanotube(CNT)/Carbon nanohorn(CNH)Transistors that use carbon nanotubes, CNT transistors, are a nanoelectronics material that allows much faster operation compared to conventional materials. CNT transistors are highly stable chemically and therefore are expected to be widely used in the field of electronics. R&D is currently being conducted for the application of CNT transistors in the form of coating on flexible devices.
One anticipated application of CNT is printable transistors, which operate much faster than conventional transistors. NEC has applied a unique technique to create highly pure (95% semiconductor) CNT which is then used to print printable transistors by using the inkjet method. The printable transistors created by using CNT feature higher transistor mobility than printable transistors produced by using conventional organic materials.
A link is opened in a new window.Carbon nanohorn(CNH) Inquiry
CNT transistors formed on plastic substrate
Printable CNT transistors (enlarged photograph)
