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. Laboratory for Nanoscale Materials Science; Empa - Swiss Federal Laboratories for Materials Science and Technology; Überlandstrasse 129 CH-8600 Dübendorf Switzerland