title: Charge transport study of high mobility polymer thin-film transistors based on thiophene substituted diketopyrrolopyrrole copolymers.
abstract: In this paper, we report on the device physics and charge transport characteristics of high-mobility dual-gated polymer thin-film transistors with active semiconductor layers consisting of thiophene flanked DPP with thienylene-vinylene-thienylene (PDPP-TVT) alternating copolymers. Room temperature mobilities in these devices are high and can exceed 2 cm(2) V(-1) s(-1). Steady-state and non-quasi-static measurements have been performed to extract key transport parameters and velocity distributions of charge carriers in this copolymer. Charge transport in this polymer semiconductor can be explained using a Multiple-Trap-and-Release or Monroe-type model. We also compare the activation energy vs. field-effect mobility in a few important polymer semiconductors to gain a better understanding of transport of DPP systems and make appropriate comparisons.
authors.affiliation: Microelectronics Research Center, The University of Texas at Austin, Austin, TX 78758, USA. taejunha0604@gmail.com
authors.forename: Tae-Jun
authors.initials: TJ
authors.lastname: Ha
authors.forename: Prashant
authors.initials: P
authors.lastname: Sonar
authors.forename: Ananth
authors.initials: A
authors.lastname: Dodabalapur