Thomas Anthopoulos

Abstract:

The increasing demand for thin-film transistors (TFTs) technologies with improved carrier mobility and operating stability has been the driving force behind the tremendous progressed witnessed in recent years in the field of organic TFTs (OTFTs). A common approach towards this goal has been the development of new compounds with improved charge transporting and processing characteristics. In this presentation, I will discuss an alternative strategy to materials, and ultimately OTFT and integrated circuits, development based on the use of molecular additives in combination with advanced semiconducting blends composed of a small-molecule and a polymer binder material. I will describe how the incorporation of different types of additives can lead to semiconducting systems, and ultimately OTFTs, that combine highly attractive features such processing versatility, high carrier mobility and enhanced bias stability. The role of the molecular additives and the underlying mechanism responsible for the performance enhancement observed in several different blend systems will also be discussed.