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

Su Jin Lee, Yong Jae Kim, So Young Yeo, Eunji Lee, Ho Sun Lim, Min Kim, Yong Won Song, Jinhan Cho, Jung Ah Lim

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

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.

Original languageEnglish
Article number14010
JournalScientific Reports
Volume5
DOIs
Publication statusPublished - 2015 Sep 11

ASJC Scopus subject areas

  • General

Fingerprint Dive into the research topics of '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'. Together they form a unique fingerprint.

  • Cite this