title: Fabrication of high performance/highly functional field-effect transistor devices based on [6]phenacene thin films.
abstract: Field-effect transistors (FETs) based on [6]phenacene thin films were fabricated with SiO2 and parylene gate dielectrics. These FET devices exhibit field-effect mobility in the saturation regime as high as 7.4 cm(2) V(-1) s(-1), which is one of the highest reported values for organic thin-film FETs. The two- and four-probe mobilities in the linear regime display nearly similar values, suggesting negligible contact resistance at 300 K. FET characteristics were investigated using two-probe and four-probe measurement modes at 50-300 K. The two-probe mobility of the saturation regime can be explained by the multiple shallow trap and release model, while the intrinsic mobility obtained by the four-probe measurement in the linear regime is better explained by the phenomenon of transport with charge carrier scattering at low temperatures. The FET device fabricated with a parylene gate dielectric on polyethylene terephthalate possesses both transparency and flexibility, implying feasibility of practical application of [6]phenacene FETs in flexible/transparent electronics. N-channel FET characteristics were also achieved in the [6]phenacene thin-film FETs using metals that possess a small work function for use as source/drain electrodes.
authors.affiliation: Research Laboratory for Surface Science, Okayama University, Okayama 700-8530, Japan. eguchi-r@cc.okayama-u.ac.jp.
authors.forename: Ritsuko
authors.initials: R
authors.lastname: Eguchi
authors.forename: Xuexia
authors.initials: X
authors.lastname: He
authors.forename: Shino
authors.initials: S
authors.lastname: Hamao
authors.forename: Hidenori
authors.initials: H
authors.lastname: Goto
authors.forename: Hideki
authors.initials: H
authors.lastname: Okamoto
authors.forename: Shin
authors.initials: S
authors.lastname: Gohda
authors.forename: Kaori
authors.initials: K
authors.lastname: Sato
authors.forename: Yoshihiro
authors.initials: Y
authors.lastname: Kubozono