1. Holst Centre, Solliance, High Tech Campus 21, 5656 AE, Eindhoven, The Netherlands
2. CHOSE—Centre for Hybrid and Organic Solar Energy, Department of Electronic Engineering, University of Rome Tor Vergata, via del Politecnico 1, 00133 Rome, Italy
3. Faculty of Aerospace Engineering, Delft University, Kluyverweg 1, 2629 HS Delft, The Netherlands