Inkjet Printing of Carbon Nanotube Complementary Inverters

The fabrication technology for emerging printed and flexible electronics is currently suboptimal. Although inkjet technology is a powerful tool for producing single-walled carbon nanotube (SWCNT) film transistors, inkjet printing at moderate temperatures (< 100 degrees C) of complementary logic gates that are suitable for plastic substrates has yet to be realized. In this study, we describe how we surmounted these difficulties by combining SWCNTs and room-temperature-processable polymer dopant. We have successfully inkjet-printed SWCNT complementary inverters at 90 degrees C, thereby improving the performance limit of SWCNT electronics. (C) 2011 The Japan Society of Applied Physics