1. ICTEAM, Université catholique de Louvain, Louvain-la-Neuve, 1348, Belgium
2. Ångström Solar Center, University of Uppsala, Uppsala, 75121, Sweden
3. ESAT-KU Leuven, University of Leuven, Leuven, 3001, Belgium
4. IMEC, Kapeldreef 75, Leuven, 3001, Belgium