1. Center for Materials Research (LaMa), Justus Liebig University, Heinrich Buff Ring 16, 35392 Giessen, Germany
2. Institute of Physical Chemistry, Justus Liebig University, Heinrich Buff Ring 17, 35392 Giessen, Germany
3. Department of Physics and Astronomy and London Center for Nanotechnology, University College London, WC1E 6BT London, United Kingdom
4. Institute of Applied Physics, Justus Liebig University, Heinrich-Buff-Ring 16, 35392 Giessen, Germany
5. Istituto CNR di Scienze e Tecnologie Chimiche “Giulio Natta”, Via Corti 12, 20133 Milano, Italy
6. Department of Chemical Sciences, University of Padova, via Marzolo 1, 35131 Padova, Italy
7. Electron Microscopy Facility, Istituto Italiano di Tecnologia, via Morego 30, 16163 Genova, Italy
8. Materials Characterization Facility, Istituto Italiano di Tecnologiass, via Morego 30, 16163 Genova, Italy
9. Department of Materials Science and Engineering, Shenzhen Key Laboratory of Full Spectral Solar Electricity Generation, Southern University of Science and Technology, No. 1088, Xueyuan Rd., 518055 Shenzhen, Guangdong, China
10. Computational Laboratory for Hybrid/Organic Photovoltaics, Istituto CNR di Scienze e Tecnologie Chimiche “Giulio Natta”, Via Elce di Sotto 8, 06123 Perugia, Italy