Oliver L.A. Monti, University of Arizona
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Abstract: Organic semiconductors have been the focus of intense research for several decades now, where the interest has been driven by their ready synthetic accessibility, processability and rich structural diversity. This makes them ideal materials for new and potentially highly efficient devices such as LEDs, photovoltaics or FETs. In such devices, interfaces between the organic semiconductors and electrodes play an outsized role in determining overall device efficiency and properties, and much effort has been expended trying to understand and control the fundamental physics of such interfaces. Spin degrees of freedom have however been mostly neglected in these discussions, except in specialized applications such as spin valves or singlet fission devices. Here, I will show how paying attention to spin reveals new and surprising insights into the physics at organic semiconductor interfaces. I will present three case studies that range from the combination of organic semiconductors with topological insulators to metals and from thin film structures to quantum transport in single molecules. **Refreshments served from 2:45pm – 3:00pm in PAS 218. Thank you.*