报告人：Henning Sirringhaus 教授
Cavendish Laboratory, University of Cambridge, Cambridge CB3 0HE
题目：CHARGE AND SPIN TRANSPORT PHYSICS OF ORGANIC AND OXIDE SEMICONDUCTORS
地点：909号楼一楼B会议室(Conference Room B, 909-1F)
Over recent years there has been tremendous progress in developing low-temperature, solution-processible organic and oxide semiconductors that provide high charge carrier mobilities for both n-type and p-type device operation, good operational stability and other functionalities such as efficient electroluminescene, sensing or memory functions. These materials allow addressing an increasingly broad range of flexible and printed electronic applications based on controlled manufacturing of flexible plastic substrates by a combination of solution processing and direct printing. One of the sources of improvement in performance has been the versatility of chemistry to provide a broad range of new molecules / precursors and the ability to assemble these into thin film structures with minimum degree of disorder. We will review recent insights into the device and charge transport physics of solution-processible organic and oxide semiconductors, with a particular focus on the microscopic processes that limit the field-effect mobility in these systems. We are also interested in understanding the spin transport physics of these materials and the relationship between molecular structure, microstructure and spin diffusion. Organic semiconductors may enable realisation of long spin relaxation times and long spin diffusion lengths due to the weak spin-orbit coupling in these carbon-based materials. We will present recent measurements of spin-transport in different molecular and polymeric semiconductors.
Prof. Henning Sirringhaus, FRS is the Hitachi Professor of Electron Device Physics at the Cavendish Laboratory and works on the charge transport, photo- and device physics of polymer and molecular semiconductors. He is co-founder of the spin-off companies, Plastic Logic and Eight-19 Ltd, commercializing organic transistor and organic solar cell technology, respectively.