title: Charge-Transport Anisotropy in a Uniaxially Aligned Diketopyrrolopyrrole-Based Copolymer.
abstract: Aligned films of a semiconducting DPP-based copolymer exhibit highly anisotropic charge transport with a band-like temperature dependence along the alignment direction and hole mobilities of up to 6.7 cm(2) V(-1) s(-1) . X-ray diffraction measurements reveal an exceptional degree of in-plane alignment, high crystallinity, and a dominant face-on orientation of the polymer backbones. The surprising charge-transport properties are interpreted in a tie-chain model consistent with anisotropic activation energies.
authors.affiliation: Cavendish Laboratory, University of Cambridge, J J Thomson Avenue, Cambridge, CB3 0HE, UK.
authors.forename: Sam
authors.initials: S
authors.lastname: Schott
authors.affiliation: Department of Materials Science and Engineering, Monash University, Clayton, Victoria, 3800, Australia.|Australian Synchrotron, 800 Blackburn Road, Clayton, Victoria, 3168, Australia.
authors.forename: Eliot
authors.initials: E
authors.lastname: Gann
authors.affiliation: Australian Synchrotron, 800 Blackburn Road, Clayton, Victoria, 3168, Australia.
authors.forename: Lars
authors.initials: L
authors.lastname: Thomsen
authors.affiliation: Department of Polymer Science & Engineering, Inha University, Incheon, 402-751, South Korea.
authors.forename: Seok-Heon
authors.initials: SH
authors.lastname: Jung
authors.affiliation: Department of Polymer Science & Engineering, Inha University, Incheon, 402-751, South Korea.
authors.forename: Jin-Kyun
authors.initials: JK
authors.lastname: Lee
authors.affiliation: Department of Materials Science and Engineering, Monash University, Clayton, Victoria, 3800, Australia.
authors.forename: Christopher R
authors.initials: CR
authors.lastname: McNeill
authors.affiliation: Cavendish Laboratory, University of Cambridge, J J Thomson Avenue, Cambridge, CB3 0HE, UK.
authors.forename: Henning
authors.initials: H
authors.lastname: Sirringhaus
keywords: alignment; field-effect transistors; organic electronics; shearing