1. LumiLab
2. Department of Solid State Sciences and Center for Nano- and Biophotonics (NB-Photonics)
3. Ghent University
4. 9000 Ghent
5. Belgium
6. Departamento de Química
7. Instituto Universitario de Ciencia de Materiales Nicolás Cabrera
8. and Condensed Matter Physics Center (IFIMAC)
9. Universidad Autónoma de Madrid
10. 28049 Madrid