title: Strain sensitivity and durability in p-type and n-type organic thin-film transistors with printed silver electrodes.
abstract: Mechanical flexibility and compatibility of printing processes are key advantage that organic electronic devices have over conventional inorganic devices. However, one of the major remaining issues for organic devices is insufficient mechanical durability of printed electrodes. Here we have investigated the mechanical durability of both p-type and n-type organic thin-film transistors (TFTs) with ink-jet printed silver electrodes from silver nanoparticle inks. The modified silver nanoparticle inks enabled the strong adhesion to the underlying polymer layer, and the fabricated organic TFTs exhibited excellent reproducibility in the bending cycle tests. The strong channel length dependence on the strain sensitivity was observed in both p-type and n-type organic TFTs. The organic TFTs with a short-channel exhibited higher sensitivity to the bending strain. These results suggest that the flexible organic TFTs with printed silver electrodes have excellent mechanical durability and are useful for bending and strain sensors.
authors.affiliation: Graduate School of Science and Engineering, Yamagata University, 4-3-16 Jonan, Yonezawa, Yamagata, 992-8510, Japan. fukuda@yz.yamagata-u.ac.jp
authors.forename: Kenjiro
authors.initials: K
authors.lastname: Fukuda
authors.forename: Kenta
authors.initials: K
authors.lastname: Hikichi
authors.forename: Tomohito
authors.initials: T
authors.lastname: Sekine
authors.forename: Yasunori
authors.initials: Y
authors.lastname: Takeda
authors.forename: Tsukuru
authors.initials: T
authors.lastname: Minamiki
authors.forename: Daisuke
authors.initials: D
authors.lastname: Kumaki
authors.forename: Shizuo
authors.initials: S
authors.lastname: Tokito