1. C.H.O.S.E. (Centre for Hybrid and Organic Solar Energy) Department of Electronic Engineering University of Rome-Tor Vergata 00133 Rome Italy
2. School of Physics and Engineering ITMO University St. Petersburg 197101 Russia
3. Universitá Niccoló Cusano Department of Electronic Engineering via don Carlo Gnocchi 3 00166 Rome Italy
4. Physics Department and NanoTech Institute University of Texas at Dallas Richardson TX 75083 USA
5. Department of Electronics and Nano‐Engineering Aalto University P.O. Box 15500 FI‐00076 Aalto Finland