1. CHOSE – Centre for Hybrid and Organic Solar Energy Department of Electronic Engineering University of Rome ‘‘Tor Vergata’’ 00133 Roma Italy
2. Istituto per i Processi Chimico-Fisici IPCF-CNR 98158 Messina Italy
3. ISM-CNR, Istituto di Struttura della Materia, Consiglio Nazionale delle Ricerche 00133 Roma Italy
4. Institut Photovoltaïque d'Ile‐de‐France (IPVF) UMR 9006, CNRS Ecole Polytechnique IP Paris, Chimie Paristech, PSL 91120 Palaiseau France
5. Institut Photovoltaïque d’Ile-de-France (IPVF) 91120 Palaiseau France