1. ESAT/Light and Lighting Laboratory, KU Leuven, Technology Campus Ghent, Ghent 9000, Belgium
2. ESAT/ELECTA, KU Leuven, Leuven 3001, Belgium
3. SOPPOM program, Zwijnaarde 9052, Belgium
4. Department of Chemistry, KU Leuven, Leuven 3001, Belgium
5. LumiLab, Department of Solid State Sciences, Ghent University, Ghent 9000, Belgium
6. Center for Nano- and Biophotonics (NB Photonics), Ghent University, Ghent 9000, Belgium