How Do Organic Semiconductors Work?
” Electronics made from carbon-based materials have found limited application, most notably in displays. To realize the full promise of organic semiconductors a better understanding of fundamental transport processes is needed. We have studied transport behavior in field effect transistors and photovoltaic devices made from small molecule organic compounds (pentacene, rubrene) that possess a high degree of crystallinity. We have developed spectroscopic tools that allow identification of trapping states. We also demonstrate, for the first time in organic semiconductors, controlled doping. Finally we explore the consequences of crystallinity for organic photovoltaics.
