Welcome to the Research Group of Selina Olthof
Research
We are a surface science group, mainly interested in the investigation of novel semiconductor materials. In particular we are looking at organic semiconductors as well as halide perovskites which can be prepared by evaporation in vacuum or by solution processing
Our focus is on photoelectron spectroscopy which we use to investigate the electronic structure of thin films as well as the oxidation states of atoms in these thin films.
We want to understand how these properties relate to the application of these materials in thin film devices, such as photovoltaics or light emitting diodes. In these multilayered structures, charge transport barriers between the different semiconductors or to the inorganic contact materials play a crucial role for the device performance.
In addition we want to better understand these semiconductors and identify and exploit ways to tune this electronic structure. This can for example be done by varying the preparation conditions, by adding dopants to the layer, or by changing the film composition.