title: Printed 2 V-operating organic inverter arrays employing a small-molecule/polymer blend.
abstract: Printed organic thin-film transistors (OTFTs) are well suited for low-cost electronic applications, such as radio frequency identification (RFID) tags and sensors. Achieving both high carrier mobility and uniform electrical characteristics in printed OTFT devices is essential in these applications. Here, we report on printed high-performance OTFTs and circuits using silver nanoparticle inks for the source/drain electrodes and a blend of dithieno[2,3-d;2',3'-d']benzo[1,2-b;4,5-b']dithiophene (DTBDT-C6) and polystyrene for the organic semiconducting layer. A high saturation region mobility of 1.0 cm2V-1s-1at low operation voltage of -5 V was obtained for relatively short channel lengths of 9 μm. All fifteen of the printed pseudo-CMOS inverter circuits were formed on a common substrate and operated at low operation voltage of 2 V with the total variation in threshold voltage of 0.35 V. Consequently, the printed OTFT devices can be used in more complex integrated circuit applications requiring low manufacturing cost over large areas.
authors.affiliation: Research Center for Organic Electronics (ROEL), Graduate School of Science and Engineering, Yamagata University, 4-3-16 Jonan, Yonezawa, Yamagata 992-8510, Japan.
authors.forename: Rei
authors.initials: R
authors.lastname: Shiwaku
authors.affiliation: Research Center for Organic Electronics (ROEL), Graduate School of Science and Engineering, Yamagata University, 4-3-16 Jonan, Yonezawa, Yamagata 992-8510, Japan.
authors.forename: Yasunori
authors.initials: Y
authors.lastname: Takeda
authors.affiliation: Functional Polymers Research Laboratory, Tosoh Corporation, 1-8, Kasumi, Yokkaichi, Mie 510-8540, Japan.
authors.forename: Takashi
authors.initials: T
authors.lastname: Fukuda
authors.affiliation: Research Center for Organic Electronics (ROEL), Graduate School of Science and Engineering, Yamagata University, 4-3-16 Jonan, Yonezawa, Yamagata 992-8510, Japan.|Japan Science and Technology Agency, PRESTO,4-1-8, Honcho, Kawaguchi, Saitama 332-0012, Japan.
authors.forename: Kenjiro
authors.initials: K
authors.lastname: Fukuda
authors.affiliation: Research Center for Organic Electronics (ROEL), Graduate School of Science and Engineering, Yamagata University, 4-3-16 Jonan, Yonezawa, Yamagata 992-8510, Japan.
authors.forename: Hiroyuki
authors.initials: H
authors.lastname: Matsui
authors.affiliation: Research Center for Organic Electronics (ROEL), Graduate School of Science and Engineering, Yamagata University, 4-3-16 Jonan, Yonezawa, Yamagata 992-8510, Japan.
authors.forename: Daisuke
authors.initials: D
authors.lastname: Kumaki
authors.affiliation: Research Center for Organic Electronics (ROEL), Graduate School of Science and Engineering, Yamagata University, 4-3-16 Jonan, Yonezawa, Yamagata 992-8510, Japan.
authors.forename: Shizuo
authors.initials: S
authors.lastname: Tokito