1. Inorganic Materials Chemistry, Ruhr University Bochum, Universitätsstr. 150, 44801 Bochum, Germany
2. Department of Chemistry, Carleton University, 1125 Colonel By Drive, Ottawa, Ontario, Canada K1S 5B6
3. RUBION, Ruhr University Bochum, Universitätsstr. 150, 44801 Bochum, Germany
4. Chair of Applied Laser Technologies, Ruhr University Bochum, Universitätsstr. 150, 44801 Bochum, Germany
5. Institute of Semiconductor and Solid State Physics, Johannes Kepler University, Altenberger Strasse 69, Linz 4040, Austria