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NEC transistor to save the earth

NEC CNT transistor
NEC CNT transistor

By: Staff Journalist, Singapore
Published: Feb 19, 2008
NEC Corporation has developed a carbon nanotube (CNT) transistor using a coating process, designed to reduce C02 emissions by 90%.

The basic operations for a transistor formed using this coating process adopt CNTs as its channel material to allow 100 times greater mobility than regular organic transistors.

The increased demand for electronics has prompted the need for more advanced electronic products that reduce environmental impact. Organic transistors and other printed electronics are a potential solution to the green problem. Printed electronics’ technologies allow transistors to be formed by printing directly onto the substrate. This means that manufacturing processes can be simplified in comparison to conventional semiconductors. Waste materials generated through manufacturing processes can be reduced, and carbon dioxide emissions can be reduced by more than 90%.

The channel coating-process technology is capable of controlling the density of the CNT accurately. Design guidelines were established to verify the relationship between transistor characteristics and the length and density of the CNT, based on an NEC device model.

Further research is expected to show the potential of CNTs to expand the scope of printed electronics applications.

Companies featured:

  • NEC Corporation