1. imec—partner in EnergyVille and Solliance Leuven 3001 Belgium
2. Department of Electrical Engineering—ESAT Catholic University of Leuven Leuven 3001 Belgium
3. IEK5—Photovoltaik, Forschungszentrum Jülich GmbH Jülich 52425 Germany
4. Department of Physics University of Hasselt Diepenbeek 3590 Belgium