报告人: Xianjie Liu
Prof. Xianje Liu obtained a Ph.D. in Physics from TU-Dresden with the topic of electronic properties of carbon nanotubes/fullerene by optical, electron, and x-ray spectroscopies., Germany in Oct. 2003 after studying in Lanzhou (B.S.) and Nanjing (M.S.) Universities, in China. Later, he moved to Innsbruck University, Maryland University and Vienna University for research on scanning probe microscopy/spectroscopy and electron spectroscopy. In 2011, I joined the surface physics and chemistry group in Link?ping University to use Swedish synchrotron source to explore organic materials with their electronic and magnetic properties upon their applications on organic electronics.
The widely potential applications and fully solution-based process in device fabrication of organic materials have triggered intensive studies of their electronic properties. Understanding the interface properties between organic/organic and organic/electrodes in organic electronics is of importance to further optimize and improve the devices performance. In this talk, I will start with short introduction of organic interface and their experimental techniques. Then I focus on the organic interface properties related to real devices, e.g., organic devices prepared in the inert environment/glovebox with solution processing, in which the integer charge transfer model was developed to describe the interface between the organic materials and passivated surface due to the polaronic effect. Later, as an example, I will extend the application of the model to organic photovoltaics upon the choice of donor/acceptor materials to reach the minimal loss of the open circuit voltage in both binary and ternary photovoltaics, even it could work in mutli-component solar cell system.