PD Dr. Markus Raphael Wagner Head of Department Semiconductor Spectroscopy +49 30 20377-317 wagner@pdi-berlin.de Semiconductor Spectroscopy Room: 517 Google Scholar Profile Core research areas III-V Nanowires for Optoelectronics Projects Point defects control in Ga2O3 thin films grown via molecular beam epitaxy (Si,Ge,Sn)O2-based ultra-wide bandgap semiconductors for power electronics (SiGOPE)