Using computer simulations, MPI-P scientists can predict the structure of crystals in organic semiconductor layers. © MPI-P

Semiconductors made of organic materials, e.g. for light-emitting diodes (OLEDs) and solar cells, could replace or supplement silicon-based electronics in the future. The efficiency of such devices depends crucially on the quality of thin layers of such organic semiconductors. These layers are created by coating or printing “inks” that contain the material. Researchers at the Max Planck Institute for Polymer Research (MPI-P) have developed a computer model that predicts the quality of such layers as a function of processing conditions, such as the drying time of the ink or the speed coating. This model aims to accelerate the time-consuming approaches for process and product optimization.

Different patterns are formed at the edges of nanographene. Zigzags are particularly interesting but unstable. FAU researchers have succeeded in creating stable layers of carbon with this pattern. Image: FAU/Konstantin Amsharov

Graphene is a promising material for use in nanoelectronics. Its electronic properties depend greatly, however, on how the edges of the carbon layer are formed. Zigzag patterns are particularly interesting in this respect, but until now it has been virtually impossible to create edges with a pattern like this. Chemists and physicists at FAU have now succeeded in producing stable nanographene with a zigzag edge. Not only that, the method they used was even comparatively simple.

1“ 120Hz WUXGA OLED microdisplay. © Fraunhofer FEP

Scientists from Fraunhofer FEP developped a large-area high-resolution low-power OLED microdisplay with high framerates. The use of these microdisplays in VR glasses can help to avoid motion sickness. The new displays can be seen at awe europe in Munich/ Germany from October 18 to 19, 2018 at booth no. 322.

Flexible film substrate of 1.25 meter width at the roll-to-roll coating line „atmoFlex 1250”. © Fraunfofer FEP

The Fraunhofer FEP has succeeded in developing a new technology for the production of ultra-smooth polymer films as part of the "OptiPerm" project. This project received funding from the European Union and the Saxony State Ministry of Economics, Labor and Transport (grant agreement no. 3000651169).