Organic/Polymeric Field‐Effect Transistors

Abstract

In this chapter, organic/polymeric field-effect transistors (OFETs) based on organic and polymeric semiconductors are introduced, including the device configurations, their working principles, and technologies for the fabrication of such devices. The chapter analyses the factors that dominate the performance of these transistors, such as the grain boundaries, morphology, interfaces and crystallization. It discusses the way in which organic semiconductor molecules are ordered and the alignment of energy levels of organic semiconductors and electrodes for the fabrication of high-performance transistors. The chapter describes the organic single-crystal transistors, including the controllable growth of organic single crystals, new fabrication techniques, transistor applications, structure-properties dependence and the transport anisotropy of organic single crystals. Solution-processed techniques are widely used to deposit organic thin films, due mainly to the low cost of such processes and the facility of obtaining large-area films by a variety of printing techniques. Controlled Vocabulary Terms OFETs; organic semiconductors; Organic single-crystal field effect transistors; organic thin film filed effect transistors; semiconductor doped polymers; thin film transistors