Dr. Felix Lang leads the (Radiation-) Tolerant Electronics with Soft Semiconductors (ROSI) Group within the Soft Matter Physics Group at the University of Potsdam. He studied Physics at the Technische Universität München and the Freie Universität Berlin. He received his Ph.D. in physics from the Technical University Berlin, studying the stability and degradation of perovskite solar cells, which he conducted at the Helmholtz-Zentrum Berlin. He was then awarded a Feodor-Lynen Fellowship, which brought him to the group of Prof. S. Stranks from the Cavendish Laboratory at the University of Cambridge, UK, where he tested and developed next-generation perovskite tandem photovoltaics for space photovoltaics. A return Fellowship from the Alexander von Humboldt Foundation brought him to the University of Potsdam, where he focused on a deeper understanding of the degradation-, working- and loss mechanisms of perovskite-based tandem photovoltaics. Recently he was awarded a Freigeist-Fellowship of the Volkswagen Stiftung, and currently, he is setting up the Tolerant Electronics with Soft Semiconductors Group at the University of Potsdam.