Aerosol Jet System used for printing on Carbon Nanotube Transistors

27 February 2009

The research was carried out by Optomec in collaboration with University of Massachusetts, Brewer Science, In. and researchers were able to fully print carbon nanotube based TFTs having high operating frequencies in the range over 5 gigahertz (GHz) with the help of Aerosol Jet System.

The new technique is a cost effective technique that can produce large area electronic circuits and the advantage of the technique is that with the help of Aerosol Jet System, we can print TFTs on flexible substrate and that too at room temperature and without using special lithography equipments. The technique is also able to print multi layers of TFTs including materials that have vide range of viscosities.

He advantage of carbon nanotubes for making TFT is that these carbon nanotubes have exceptional aspect ratio and great mechanical strength. Using an on-off-ratio of over 100, and solely using Jet Aerosol printing technology, researchers were able to print a TFT having ultra high frequency of over 5 gigahertz. The researchers claim that with aerosol jet systems, they were able to achieve sub micron layer thickness having 5 micron registration and less than 10 micron feature size.

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