1. Centre for Hybrid and Organic Solar Energy (CHOSE) Department of Electronic Engineering University of Rome Tor Vergata Rome 00133 Italy
2. Istituto di Struttura della Materia (ISM‐CNR) Via del Fosso del Cavaliere 100 Rome 00133 Italy
3. Greatcell Italy Greatcell Solar Italia Viale Castro Pretorio 122 Rome 00185 Italy
4. Dresden Center for Nanoanalysis (DCN) Center for Advancing Electronics Dresden (cfaed) Technische Universität Dresden 01069 Dresden Germany