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The present publication is embedded in the field of organic electronics, in which optoelectronic devices are made from carbon-based materials. In these devices, charge injection is critically determined by the electronic and structural properties of the interfaces between the electrodes and the conjugated organic materials (COMs). Three main topics are addressed: energy level tuning with new and strong electron (i) donor and (ii) acceptor materials and (iii) the density dependent re-orientation of a molecular monolayer and its impact on the energy level alignment. Ideal techniques to investigate the electronic and structural properties at interfaces are photoelectron and reflection absorption infrared spectroscopy, on which the author gives a detailed introduction.
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Benjamin Bröker, born 19.05.1983 in Hofgeismar. Studies of Physics at Würzburg and New Brunswick (New Jersey, USA). He received his PhD in Physics from the Humboldt Universität zu Berlin in 2010. Research stays at the Zernike Institute for Advanced Materials (Groningen, The Netherlands) and Princeton University (New Jersey, USA).
