In Situ and Ex Situ Energy-Filtered Transmission Electron Microscopy Studies on the Nanomorpholgy Evolution of Organic Bulk Heterojunction Solar Cells

1. Institute of Microand Nanostructure Research (IMN) & Center for Nanoanalysis and Electron Microscopy (CENEM), University of Erlangen-Nuremberg, Germany 2. Institute of Materials for Electronics and Energy Technology (i-MEET), University of ErlangenNuremberg, Germany 3. Institute for Crystallography and Structural Physics, University of Erlangen-Nuremberg, Germany * Corresponding authors: christina.harreiss@fau.de, erdmann.spiecker@fau.de