Solution-Processed Organic Thin-Film Transistors

Abstract

Organic transistors are MOS-type field-effect transistors in which an organic semiconductor is used as the active layer. Some organic semiconducting compounds are highly soluble in certain solvents, so that it becomes possible to form a semiconductor thin film by solution coating. Thus, there are considerable expectations for innovative industrial applications, in which low-cost, large-area devices can be produced on plastic films using printing technology. In this report, I introduce the physics of carrier transport in an intermolecularly delocalized electronic state, which is a key factor for realizing high-performance organic transistors. I also describe prospects for the industrial application of printable single-crystal organic semiconductors with mobilities exceeding 10cm2/Vs.