1. CHOSE (Centre for Hybrid and Organic Solar Energy) Department of Electronic Engineering University of Rome “Tor Vergata” 00133 Rome Italy
2. Helmholtz-Institut Erlangen-Nürnberg für Erneuerbare Energien (IEK-11) Abteilung Hochdurchsatzmethoden in der Photovoltaik (ZAE-Kooperation) Forschungszentrum Jülich GmbH 91058 Erlangen
3. Institute of Materials for Electronics and Energy Technology (i-MEET) Friedrich-Alexander Universität Erlangen-Nürnberg (FAU) 91058 Erlangen 91058 Germany
4. Institute of Structure of Matter (ISM) National Research Council (CNR) 00133 Rome Italy