1. Diagnostics and MetrologyFraunhofer Center for Silicon Photovoltaics CSP Otto-Eissfeldt-Strasse 12 06120 Halle (Saale) Germany
2. Faculty of EngineeringLeipzig University of Applied Sciences (HTWK Leipzig) Karl-Liebknecht-Strasse 134 04277 Leipzig Germany
3. Faculty EMW–Photovoltaic TechnologiesAnhalt University of Applied Sciences Bernburger Strasse 55 06366 Köthen Germany