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Optoelectronics of Organic Materials

We are interested in the optical, and electronic properties of molecular semiconductors for photonic and optoelectronic applications. Using a variety of time resolved laser spectroscopy techniques we investigate the transient response of photoexcitations in semiconducting polymers and small molecules. Time resolved measurements from femtoseconds to microseconds offer the opportunity to study the dynamics of excitons, charge transfer excitons and polarons. The spectroscopy of these quasi-particles reveals the fundamental electronic properties of such materials and provides insights for the design of next generation light emitting diodes and solar cells.

In parallel we investigate semiconductor nanocrystals, which show remarkable optical properties according to quantum confinement. By studying heterostructures with complex geometries we aim to effectively control single photon emission and charge separation. We are also interested in hybrid materials where the unique properties of the single components are combined to obtain collective responses.

Our research is performed in collaboration with several academic and industrial research labs.