Graphene might replace copper from Integrated Circuits

17 June 2009

Graphene a well known nanomaterial and a building block of graphite and it is used for many electronics applications. Researchers at Georgia Institute of Technology have now established it’s another important property and according to them it might replace the copper from next generation integrated circuits.

Presently thin copper wire is being used for connecting transistors and other devices within an integrated circuit and now researchers have carried out the detailed testing including the thermal conductivity and resistivity of an integrated circuit using an 18 nanometer graphene ribbon and found that the grapheme can replace the tradition copper for on chip connect application.

Researchers found that at the 18 to 20 nanometer scale, the grapheme wire can out perform the traditional copper. In addition to significant improvement in resistivity and thermal conductivity, grapheme interconnects were also better in electron mobility and mechanical strengths. Researchers also observed that there was lower conductivity between grapheme interconnects and the adjacent wire.

Ragunath Murali, a researcher at Georgia Institute of Technology and his collaborator took out grapheme from a block of graphite and studied their electrical properties and are hopeful to integrate grapheme with silicon. Researchers have published their findings in the June issue of Electron Device Letters, an IEEE Journal.

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