1. Industrial Solar GmbH, Basler Straße 115, 79115 Freiburg, Germany;
2. Neutron Physics and Reactor Technology (INR), Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
3. Industrial Solar GmbH, Basler Straße 115, 79115 Freiburg, Germany