title: Template-mediated nano-crystallite networks in semiconducting polymers.
abstract: Unlike typical inorganic semiconductors with a crystal structure, the charge dynamics of π-conjugated polymers (π-CPs) are severely limited by the presence of amorphous portions between the ordered crystalline regions. Thus, the formation of interconnected pathways along crystallites of π-CPs is desired to ensure highly efficient charge transport in printable electronics. Here we report the formation of nano-crystallite networks in π-CP films by employing novel template-mediated crystallization (TMC) via polaron formation and electrostatic interaction. The lateral and vertical charge transport of TMC-treated films increased by two orders of magnitude compared with pristine π-CPs. In particular, because of the unprecedented room temperature and solution-processing advantages of our TMC method, we achieve a field-effect mobility of 0.25 cm(2) V(-1) s(-1) using a plastic substrate, which corresponds to the highest value reported thus far. Because our findings can be applied to various π-conjugated semiconductors, our approach is universal and is expected to yield high-performance printable electronics.
authors.affiliation: 1] Gwangju Institute of Science and Technology (GIST), School of Materials Science and Engineering (SMSE), Gwangju 500-712, Korea [2] Heeger Center for Advanced Materials (HCAM), Gwangju Institute of Science and Technology (GIST), Gwangju 500-712, Korea.
authors.forename: Sooncheol
authors.initials: S
authors.lastname: Kwon
authors.affiliation: 1] Gwangju Institute of Science and Technology (GIST), School of Materials Science and Engineering (SMSE), Gwangju 500-712, Korea [2] Heeger Center for Advanced Materials (HCAM), Gwangju Institute of Science and Technology (GIST), Gwangju 500-712, Korea.
authors.forename: Kilho
authors.initials: K
authors.lastname: Yu
authors.affiliation: 1] Gwangju Institute of Science and Technology (GIST), School of Materials Science and Engineering (SMSE), Gwangju 500-712, Korea [2] Heeger Center for Advanced Materials (HCAM), Gwangju Institute of Science and Technology (GIST), Gwangju 500-712, Korea.
authors.forename: Kyoungchun
authors.initials: K
authors.lastname: Kweon
authors.affiliation: 1] Gwangju Institute of Science and Technology (GIST), School of Materials Science and Engineering (SMSE), Gwangju 500-712, Korea [2] Heeger Center for Advanced Materials (HCAM), Gwangju Institute of Science and Technology (GIST), Gwangju 500-712, Korea.
authors.forename: Geunjin
authors.initials: G
authors.lastname: Kim
authors.affiliation: 1] Gwangju Institute of Science and Technology (GIST), School of Materials Science and Engineering (SMSE), Gwangju 500-712, Korea [2] Heeger Center for Advanced Materials (HCAM), Gwangju Institute of Science and Technology (GIST), Gwangju 500-712, Korea.
authors.forename: Junghwan
authors.initials: J
authors.lastname: Kim
authors.affiliation: 1] Heeger Center for Advanced Materials (HCAM), Gwangju Institute of Science and Technology (GIST), Gwangju 500-712, Korea [2] Research Institute for Solar and Sustainable Energies (RISE), Gwangju Institute of Science and Technology (GIST), Gwangju 500-712, Korea.
authors.forename: Heejoo
authors.initials: H
authors.lastname: Kim
authors.affiliation: Gwangju Institute of Science and Technology (GIST), School of Materials Science and Engineering (SMSE), Gwangju 500-712, Korea.
authors.forename: Yong-Ryun
authors.initials: YR
authors.lastname: Jo
authors.affiliation: 1] Gwangju Institute of Science and Technology (GIST), School of Materials Science and Engineering (SMSE), Gwangju 500-712, Korea [2] Heeger Center for Advanced Materials (HCAM), Gwangju Institute of Science and Technology (GIST), Gwangju 500-712, Korea [3] Research Institute for Solar and Sustainable Energies (RISE), Gwangju Institute of Science and Technology (GIST), Gwangju 500-712, Korea.
authors.forename: Bong-Joong
authors.initials: BJ
authors.lastname: Kim
authors.affiliation: Pohang Accelerator Laboratory (PAL), Pohang University of Science and Technology (POSTECH), Pohang 790-784, Korea.
authors.forename: Jehan
authors.initials: J
authors.lastname: Kim
authors.affiliation: 1] Heeger Center for Advanced Materials (HCAM), Gwangju Institute of Science and Technology (GIST), Gwangju 500-712, Korea [2] Research Institute for Solar and Sustainable Energies (RISE), Gwangju Institute of Science and Technology (GIST), Gwangju 500-712, Korea.
authors.forename: Seoung Ho
authors.initials: SH
authors.lastname: Lee
authors.affiliation: 1] Gwangju Institute of Science and Technology (GIST), School of Materials Science and Engineering (SMSE), Gwangju 500-712, Korea [2] Heeger Center for Advanced Materials (HCAM), Gwangju Institute of Science and Technology (GIST), Gwangju 500-712, Korea [3] Research Institute for Solar and Sustainable Energies (RISE), Gwangju Institute of Science and Technology (GIST), Gwangju 500-712, Korea.
authors.forename: Kwanghee
authors.initials: K
authors.lastname: Lee