1. Institute
for Materials in Electronics and Energy Technology (i-MEET), Friedrich-Alexander University Erlangen-Nuremberg, Martensstraße 7, D-91058 Erlangen, Germany
2. Photophysics
and OptoElectronics, Zernike Institute of Advanced Materials, Rijksuniversiteit Groningen, Nijenborgh 4 NL-9747
AG, Groningen, The Netherlands
3. Max-Planck-Institut
für Kohlenforschung (MPI-KOFO), Kaiser-Wilhelm-Platz 1, D-45470 Mühlheim an der Ruhr, Germany
4. Bavarian
Center
for Applied Energy Research (ZAE-Bayern), Haberstraße 2a, 91058 Erlangen, Germany