Extremely sharp switching operation of printed transistors using highly layered crystalline organic semiconductors

Abstract

The development of organic semiconductors (OSCs) with showing a very high layered crystallinity has recently prompted a considerable evolution of printed organic field-effect transistors. Herein, we first illustrate several intriguing aspects of highly layered crystalline OSCs, and discuss the molecular origin of the high layered crystallinity. We then show that it is possible to manufacture highly uniform and ultrathin crystalline semiconductor layers by utilizing the self-organized growth of the crystalline OSC layers through solution processes. Particularly, a unique method allows to produce extremely clean semiconductor interfaces that provide practical device performances with a very sharp and stable switching operation at low voltages. We report the present status of basic studies on the printed electronics technology.