Lee, Su Jin Kim, Yong-Jae Yeo, So Young Lee, Eunji Lim, Ho Sun Kim, Min Song, Yong-Won Cho, Jinhan Lim, Jung Ah 2024-01-20T06:03:59Z 2024-01-20T06:03:59Z 2021-09-04 2015-09-11 2045-2322 https://pubs.kist.re.kr/handle/201004/125025 Here we report the first demonstration for centro-apical self-organization of organic semiconductors in a line-printed organic semiconductor: polymer blend. Key feature of this work is that organic semiconductor molecules were vertically segregated on top of the polymer phase and simultaneously crystallized at the center of the printed line pattern after solvent evaporation without an additive process. The thickness and width of the centro-apically segregated organic semiconductor crystalline stripe in the printed blend pattern were controlled by varying the relative content of the organic semiconductors, printing speed, and solution concentrations. The centro-apical self-organization of organic semiconductor molecules in a printed polymer blend may be attributed to the combination of an energetically favorable vertical phase-separation and hydrodynamic fluids inside the droplet during solvent evaporation. Finally, a centro-apically phase-separated bilayer structure of organic semiconductor: polymer blend was successfully demonstrated as a facile method to form the semiconductor and dielectric layer for OFETs in one-step. English NATURE PUBLISHING GROUP THIN-FILM TRANSISTORS MOBILITY PENTACENE PLACEMENT ALIGNMENT FACILE Centro-Apical Self-Organization of Organic Semiconductors in a Line-Printed Organic Semiconductor: Polymer Blend for One-Step Printing Fabrication of Organic Field-Effect Transistors Article 10.1038/srep14010 1 SCIENTIFIC REPORTS, v.5 SCIENTIFIC REPORTS 5 scie scopus 000361035900001 2-s2.0-84941341539 Multidisciplinary Sciences Science & Technology - Other Topics Article THIN-FILM TRANSISTORS MOBILITY PENTACENE PLACEMENT ALIGNMENT FACILE organic semiconductor polymer blend printing phase separation organic field-effect transistors