The origin contact resistance in organic field-effect transistors will be discussed, along with the impact on device performance and accuracy in extraction of device parameters. A strategy for reducing contact resistance will be presented; it consists of creating high-workfunction domains at the surface of the injecting electrodes.
By careful consideration of solid-state organization, crystallographic disorder, and major phonon modes, small-molecule semiconductors can be optimized to yield impressive charge transport properties. Similar optimization of solid-state order can also be applied to high-performance singlet fission materials for solar power harvesting.
The ability to control nanoscale morphology and molecular organization in organic semiconducting polymer films is an important prerequisite for enhancing efficiency of organic thin-film devices. In this presentation, we will report on a novel “bottom-up” approach towards semiconducting polymer thin films based on surface-initiated polymerization.
We employ the well-studied donor/acceptor system consisting of tris(2,2'-bipyridine)ruthenium(II) and anthracene to validate a simple rate equation model for energy transfer and subsequent dimerization of the excited anthracene acceptor.