Device physics of organic field effect transistors

Field-effect transistors based on organic semiconductors provide a controlled means of studying the charge transport physics of these materials and are of interest for a broad range of applications in electronics, optoelectronics or bioelectronics. In this talk we will provide a general overview of the structure-property relationships that determine the charge transport physics of conjugated polymer FETs and discuss recent advances in improving their performance and charge carrier mobilities. We will also discuss our current understanding of the factors that govern and limit the operational stability of conjugated polymer FETs for applications in large area electronics. In particular, we will dicuss mechanisms that lead to threshold voltage shift upon positive and negative gate bias stress and approaches for reducing these threshold voltage shifts.