1. University of Stuttgart, Institute for Inorganic Chemistry, Pfaffenwaldring 55, 70569 Stuttgart, Germany
2. Max-Planck Institute for Solid-State Research, Heisenbergstraße 1, 70569 Stuttgart, Germany
3. University of Silesia in Katowice, Ulica Uniwersytecka 4, 40-007 Katowice, Poland
4. University of Stuttgart, Institute for Physical Chemistry, Pfaffenwaldring 55, 70569 Stuttgart, Germany
5. Münster University of Applied Sciences, Institute for Optical Technologies, Stegerwaldstraße 39, 48565 Steinfurt, Germany