1. Department of Structural Engineering and Material Sciences, Unit of Material Technology, University of Innsbruck,
Technikerstraße 13, 6020 Innsbruck, Austria
2. Helmholtz-Zentrum Berlin, Competence Centre Thin-Film- and Nanotechnology for Photovoltaics Berlin,
Schwarzschildstraße 3, 12489 Berlin, Germany
3. Sunplugged GmbH, Mindelheimer Str.
6, 6130 Schwaz, Austria