We investigate structural and optical properties of new organic materials in nm-thin films for applications in bio-interfaces and organic electronics.

With the help of spectroscopic ellipsometry we explore

• swelling of polymer films
• biomolecule adsorption
• temperature dependent phase transitions
• anisotropic optical properties of semiconducting films for OPV or OLED

To understand morphology development in organic thin films we further focus on interaction analysis by IR-spectroscopic techniques for ultra-thin films as well as the observation of crystalline textures by grazing-incidence wide angle X-ray scattering (GIWAXS).

Projects

• 06/2023 - 05/2026: Steep absorption with supramolecular self-assembled functional dyes for vacuum-deposited organic solar cells (STEEP UP), coordinator IPF: P. Uhlmann (NM), E. Bittrich (MSA); partners: Heliatek GmbH, IOC PAS, CNRS MOLTECH-Anjou, University of Mons; http://m-era-steepup.eu

• 8/2019 - 10/2022: Technologies for efficient encapsulation of flexible electronic components (TFE4OPV), leading PI: Heliatek GmbH, PIs IPF: P. Uhlmann (NM), E. Bittrich (MSA), partners: Fraunhofer FEP

• 8/2017 - 04/2020: Bioinspired molecular self-assembly of donor-acceptor networks in organic solar cells (InspirA), leading PI: Heliatek GmbH, PI IPF: P. Uhlmann (NM), partners: Friedrich-Schiller University Jena, Synthon Chemicals GmbH & Co. KG