5127 (office phone)
5215 (lab phone)
My PhD work focuses on ultrafast electron dynamics on electrode/electrolyte interfaces. Here I am currently involved in two projects:
The first one deals with the electrolyte dimethylsulfoxide (DMSO), which is a promising candidate for Li-O2 batteries. We are using time- and angle-resolved two-photon photoelectron spectroscopy on a Cu(111)/DMSO/O2 model system in order to disentangle single steps of charge transfer from a metal electrode to O2 through the electrolyte.
The second project focusses on the H2O/hematite interface. Hematite is the most stable iron oxide under standard conditions. Due to its vast abundance in earth’s crust it plays a key role in geochemistry and corrosion processes. Moreover, it is considered as catalyzer for photochemical water splitting, since it is stable in water and has a favorable band gap of roughly 2.1 eV. With angle-resolved two-photon photoelectron spectroscopy we are determining the occupied and unoccupied electronic band structure of hematite and are investigating the influence of water on the electronic properties of this material under UHV conditions. This fundamental information will enable us to perform and interpret optical experiments such as time-resolved absorption and reflectivity at the solid-liquid interface.