The Helmholtz-Zentrum Berlin (HZB) has long-standing cooperations with research institutions in Israel, often leading to close friendships over the years. One such friendship developed with David Cahen. As a renowned Professor of Chemistry, Physics and Material Research (emeritus), he runs a group at the Weizmann Institute of Science (and at Bar Ilan University) in Israel, where he works today on sustainable materials for energy conversion, especially Solar Cells. At the end of his fellowship at HZB in the month of September 2023, he told Ulrike Goldenblatt what he took away from his time in Berlin. (Please note, this interview was held before the atrocious terroristRead More →