Suggestions for RESEARCH PROJECTS starting

Interface processes strongly affect the performances and efficiency of organic based devices. The integration of 2D materials like graphene in organic devices (for example as electrodes) is expected, on the other hand, to improve the overall device performances. There is a need therefore for a deeper understanding and control of processes like charge transfer (CT) at interfaces between organic films, graphene and metals. Charge injection across molecular junctions can occur at the femtosecond time scale or even shorter. We use X-ray spectroscopies to investigate charge injection in complex heterostructures that include organic molecules, graphene and metallic substrates. More specifically the Core hole clock implementation of the Resonant Photoemission spectroscopy (RESPES) allows us to determine charge dynamics in both directions (to/from the molecule) at these interfaces and can give clues on the interface parameters that can increase/decrease the charge transfer efficiency. The same type fo processes will be studied with time resolved pump-probe spectroscopies using femtosecond lasers and Free Electron Lasers.