title: Transition between band and hopping transport in polymer field-effect transistors.
abstract: Hall effect and slightly negative temperature dependence of the mobility in polymeric transistors are demonstrated. The semiconductor channel is based on a polycyclopentadithiophene-benzothiadiazole (CDT-BTZ) donor-acceptor copolymer film whose chain direction is oriented by mechanical compression at the surface of an ionic liquid. The mobility is 5.6 cm(2) V(-1) s(-1) at room temperature, and is further improved to 6.7 cm(2) V(-1) s(-1) at 260 K.
authors.affiliation: Department of Advanced Materials Science, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, 277-8561, Chiba, Japan.
authors.forename: Yu
authors.initials: Y
authors.lastname: Yamashita
authors.forename: Junto
authors.initials: J
authors.lastname: Tsurumi
authors.forename: Felix
authors.initials: F
authors.lastname: Hinkel
authors.forename: Yugo
authors.initials: Y
authors.lastname: Okada
authors.forename: Junshi
authors.initials: J
authors.lastname: Soeda
authors.forename: Wojciech
authors.initials: W
authors.lastname: Zajączkowski
authors.forename: Martin
authors.initials: M
authors.lastname: Baumgarten
authors.forename: Wojciech
authors.initials: W
authors.lastname: Pisula
authors.forename: Hiroyuki
authors.initials: H
authors.lastname: Matsui
authors.forename: Klaus
authors.initials: K
authors.lastname: Müllen
authors.forename: Jun
authors.initials: J
authors.lastname: Takeya
keywords: Hall effect; band transport; organic field-effect transistors; polymer semiconductors