Experimental semiconductor physics
We use optical spectroscopy and microscopy to understand how light interacts with emerging semiconductor materials and how those interactions shape optoelectronic devices.
Research framework
Our work connects measurement, material behaviour and device function.
Spectroscopy, microscopy and dynamics reveal where excitations move, interact and recombine.
Perovskites, organic semiconductors and nanocrystals provide the systems in which those processes unfold.
Solar cells, light-emitting devices and photodetectors connect material response to device operation.
Latest News
We are very happy to welcome Paundra Pratama to the KahmannLab as a DAAD visiting researcher. Paundra is a PhD candidate in Materials Science and Applied Chemistry at Kumamoto University in the group of Prof. Tetsuya Kida. His research focuses on colloidal metal-halide nanocrystals, particularly the roles of ligand and surface chemistry, lattice metastability, and […]
A new paper from our collaboration with colleagues at TU Chemnitz and Hasselt University is now out in Applied Physics Letters. Circular dichroism spectroscopy is increasingly used to study chiral thin films, but optical anisotropy can introduce linear-dichroism and birefringence contributions that masquerade as genuine chiroptical signals. In this work, we present a practical step-by-step […]
We are pleased to highlight the Small Structures special collection “Exploiting Dimensionality in Hybrid Metal Halides – Design, Properties, Applications,” co-edited by Simon together with Wouter Van Gompel, Silvia G. Motti and Bowen Yang. The collection brings together contributions exploring how structural and electronic dimensionality can be used to control the properties of hybrid metal […]
A new look for the KahmannLab website Our website has had a substantial overhaul. Over the past week, we have rebuilt large parts of the site to make it easier to navigate, easier to keep up to date, and more representative of the way we actually think about our research. The new version now brings […]
Group identity
Our approach combines hands-on optical measurements and materials work with data processing, theory and modelling. The group brings those perspectives together around the same scientific questions.
Selected highlights
Opportunities
See the Join Us page for current information about projects, applications and ways to contact the group.
