Showing papers by "Jung Ah Lim published in 2010"
TL;DR: In this article, an inkjet-printed single-droplet of a semiconducting/insulating polymer blend holds substantial promise as a means for implementing direct-write fabrication of organic transistors.
Abstract: Fabrication of organic field-effect transistors (OFETs) using a high-throughput printing process has garnered tremendous interest for realizing low-cost and large-area flexible electronic devices. Printing of organic semiconductors for active layer of transistor is one of the most critical steps for achieving this goal. The charge carrier transport behavior in this layer, dictated by the crystalline microstructure and molecular orientations of the organic semiconductor, determines the transistor performance. Here, it is demonstrated that an inkjet-printed single-droplet of a semiconducting/insulating polymer blend holds substantial promise as a means for implementing direct-write fabrication of organic transistors. Control of the solubility of the semiconducting component in a blend solution can yield an inkjet-printed single-droplet blend film characterized by a semiconductor nanowire network embedded in an insulating polymer matrix. The inkjet-printed blend films having this unique structure provide effective pathways for charge carrier transport through semiconductor nanowires, as well as significantly improve the on-off current ratio and the environmental stability of the printed transistors.
102 citations
Patent•
23 Jul 2010
TL;DR: In this paper, a surface treated substrate for an ink-jet printing process is provided to perform a self-assembly by treating the surface of a dielectric layer with a hydrophilic surface.
Abstract: PURPOSE: A surface treated substrate for an ink-jet printing process is provided to perform a self-assembly by treating the surface of a dielectric layer with a hydrophilic surface CONSTITUTION: A crystalline semiconductor thin film is formed by dropping an organic semiconductor solution on a hydrophilic surface The hydrophilic surface is the dielectric layer of a transistor The hydrophilic surface is ultraviolet-ozone or oxygen plasma treated surface The surface energy of the hydrophilic surface is more than 45mJ/m^2 The hydrophilic surface is self-assembled monolayer film which is formed on the dielectric layer
2 citations