Organic Field Effect Transistors: Interfacial Modification, Dielectric Properties Control, and Semiconductor Molecular Design

Abstract

In recent years, organic electronics have become a field of interest in both academic and industrial settings. Through the integration of semiconducting organic small molecules/polymers into existing device architectures low cost, flexible, solution processed, circuitry can be achieved. Specifically, high performance organic field effect transistors (OFETs) facilitate the construction of background logic to active matrix displays, RFID cards, chemical sensors, and a method of testing intrinsic electronic properties of organic materials. Due to their potential for ubiquitous use, device performance in a variety of applications must be optimized. In this thesis, methods to enhance performance of OFET devices will be discussed with respect to semiconductor-dielectric interfacial modification, dielectric properties control, and semiconductor molecular design. These three tenants governing OFET device performance are explored through experiments in self-assembly, synthetic chemistry and dielectric alteration.