title: Solution-printed organic semiconductor blends exhibiting transport properties on par with single crystals.
abstract: Solution-printed organic semiconductors have emerged in recent years as promising contenders for roll-to-roll manufacturing of electronic and optoelectronic circuits. The stringent performance requirements for organic thin-film transistors (OTFTs) in terms of carrier mobility, switching speed, turn-on voltage and uniformity over large areas require performance currently achieved by organic single-crystal devices, but these suffer from scale-up challenges. Here we present a new method based on blade coating of a blend of conjugated small molecules and amorphous insulating polymers to produce OTFTs with consistently excellent performance characteristics (carrier mobility as high as 6.7 cm(2) V(-1) s(-1), low threshold voltages of<1 V and low subthreshold swings <0.5 V dec(-1)). Our findings demonstrate that careful control over phase separation and crystallization can yield solution-printed polycrystalline organic semiconductor films with transport properties and other figures of merit on par with their single-crystal counterparts.
authors.affiliation: Division of Physical Science and Engineering, King Abdullah University of Science and Technology, Thuwal 23955-6900, Saudi Arabia.
authors.forename: Muhammad R
authors.initials: MR
authors.lastname: Niazi
authors.affiliation: Division of Physical Science and Engineering, King Abdullah University of Science and Technology, Thuwal 23955-6900, Saudi Arabia.
authors.forename: Ruipeng
authors.initials: R
authors.lastname: Li
authors.affiliation: Division of Physical Science and Engineering, King Abdullah University of Science and Technology, Thuwal 23955-6900, Saudi Arabia.
authors.forename: Er
authors.initials: E
authors.lastname: Qiang Li
authors.affiliation: Division of Physical Science and Engineering, King Abdullah University of Science and Technology, Thuwal 23955-6900, Saudi Arabia.
authors.forename: Ahmad R
authors.initials: AR
authors.lastname: Kirmani
authors.affiliation: Division of Physical Science and Engineering, King Abdullah University of Science and Technology, Thuwal 23955-6900, Saudi Arabia.
authors.forename: Maged
authors.initials: M
authors.lastname: Abdelsamie
authors.affiliation: Advanced Imaging and Characterization Laboratory, King Abdullah University of Science and Technology, Thuwal 23955-6900, Saudi Arabia.
authors.forename: Qingxiao
authors.initials: Q
authors.lastname: Wang
authors.affiliation: Department of Materials Science and Engineering, Cornell University, Ithaca, 14850 New York, USA.
authors.forename: Wenyang
authors.initials: W
authors.lastname: Pan
authors.affiliation: Department of Chemistry, University of Kentucky, Lexington, 40506 Kentucky, USA.
authors.forename: Marcia M
authors.initials: MM
authors.lastname: Payne
authors.affiliation: Department of Chemistry, University of Kentucky, Lexington, 40506 Kentucky, USA.
authors.forename: John E
authors.initials: JE
authors.lastname: Anthony
authors.affiliation: Cornell High Energy Synchrotron Source, Cornell University, Ithaca, 14850 New York, USA.
authors.forename: Detlef-M
authors.initials: DM
authors.lastname: Smilgies
authors.affiliation: Division of Physical Science and Engineering, King Abdullah University of Science and Technology, Thuwal 23955-6900, Saudi Arabia.
authors.forename: Sigurdur T
authors.initials: ST
authors.lastname: Thoroddsen
authors.affiliation: Department of Materials Science and Engineering, Cornell University, Ithaca, 14850 New York, USA.
authors.forename: Emmanuel P
authors.initials: EP
authors.lastname: Giannelis
authors.affiliation: Division of Physical Science and Engineering, King Abdullah University of Science and Technology, Thuwal 23955-6900, Saudi Arabia.
authors.forename: Aram
authors.initials: A
authors.lastname: Amassian
mesh_terms: D003460:Crystallization; D004581:Electronics / Q000295:instrumentation; D011108:Polymers / Q000737:chemistry*; D012666:Semiconductors; D014173:Transistors, Electronic
chemical_list: D011108:Polymers