Zaumseil Group - Research Optical Spectroscopy from visible to near-infrared & from room temperature to 4 K

We use a wide range of spectroscopic techniques to characterize the electronic and optical properties of nanomaterials such as sorted single-walled carbon nanotubes (SWCNTs) but also thin films of organic semiconductors. Our absorption and fluorescence spectroscopy/microscopy setups cover the wavelength range from visible to near-infrared at ambient but also at cryogenic (4 K) temperatures. Raman and THz spectroscopy are further applied to investigate our samples. We are interested in both weak and strong light-matter interactions and can visualize the formation of exciton-polaritons in our home-built Fourier-spectroscopy setup. The chiroptical properties of SWCNTs and novel chiral organic emitters are investigated with circular dichroism (CD) and circularly polarized luminescence (CPL) spectroscopy.