1. Laboratory of Inorganic Chemistry Department of Chemistry and Applied Biosciences, ETH Zürich Vladimir-Prelog-Weg 1 CH-8093 Zürich Switzerland
2. Laboratory for Thin Films and Photovoltaics Empa – Swiss Federal Laboratories for Materials Science and Technology Überlandstrasse 129 CH-8600 Dübendorf Switzerland
3. Institute for Intelligent Industrial Systems I3S Berner Fachhochschule Pestalozzistrasse 20 CH-3400 Burgdorf Switzerland