EPR and EDMR Spectroscopy
Through the BeJEL platform we have access to a variety of different spectrometers at the FU Berlin and the Helmholtz-Zentrum Berlin für Materialien und Energie to perform EPR and EDMR experiments.
In addition, we use a tabletop EPR spectrometer to, e.g., quickly and reliably measure the concentration of paramagnetic defect states in a sample.
Sample Preparation (wet-chemical processing)
A glovebox is used to fabricate thin organic semiconductor films by wet-chemical processing. The box is equipped with the necessary equipment to pepare absorber layers for solar cells in an inert atmosphere.
Sample Preparation (thermal evaporation)
A second glovebox system allows us to deposit thin metal films (e.g., contact layers for solar cells, light-emitting diodes or transistors) and to evaporate small molecules. The deposition process takes place inside a vacuum chamber that is integrated in the nitrogen-filled glovebox. This prevents the samples from being exposed to oxygen, which can accelerate degradation processes. In this way we can study the intrinsic properties of materials and devices.
A probe station is used for analysing the current-voltage characteristics of electronic devices such as solar cells, light-emitting diodes and transistors.