1. Experimentelle Physik 2
2. Technische Universität Dortmund
3. 44227 Dortmund
4. Germany
5. Ioffe Institute
6. Institute of Physics
7. Polish Academy of Sciences
8. PL-02-668 Warsaw
9. Poland
10. LUMINOUS! Center of Excellence for Semiconductor Lighting and Displays
11. School of Electrical and Electronic Engineering
12. School of Physical and Materials Sciences
13. Nanyang Technological University
14. 639798 Singapore
15. Department of Electrical and Electronics Engineering
16. Department of Physics
17. UNAM – Institute of Materials Science and Nanotechnology
18. Bilkent University
19. 06800 Ankara