title: Inkjet printed circuits based on ambipolar and p-type carbon nanotube thin-film transistors.
abstract: Ambipolar and p-type single-walled carbon nanotube (SWCNT) thin-film transistors (TFTs) are reliably integrated into various complementary-like circuits on the same substrate by inkjet printing. We describe the fabrication and characteristics of inverters, ring oscillators, and NAND gates based on complementary-like circuits fabricated with such TFTs as building blocks. We also show that complementary-like circuits have potential use as chemical sensors in ambient conditions since changes to the TFT characteristics of the p-channel TFTs in the circuit alter the overall operating characteristics of the circuit. The use of circuits rather than individual devices as sensors integrates sensing and signal processing functions, thereby simplifying overall system design.
authors.affiliation: Microelectronics Research Center, The University of Texas at Austin, Austin, Texas 78758, United States.
authors.forename: Bongjun
authors.initials: B
authors.lastname: Kim
authors.affiliation: Department of Materials Science &Engineering and Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States.
authors.forename: Michael L
authors.initials: ML
authors.lastname: Geier
authors.affiliation: Department of Materials Science &Engineering and Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States.
authors.forename: Mark C
authors.initials: MC
authors.lastname: Hersam
authors.affiliation: Microelectronics Research Center, The University of Texas at Austin, Austin, Texas 78758, United States.
authors.forename: Ananth
authors.initials: A
authors.lastname: Dodabalapur