1. Laboratory of Inorganic Chemistry, Department of Chemistry and Applied Biosciences, ETH Zürich, CH-8093 Zürich, Switzerland
2. Laboratory for Thin Films and Photovoltaics, Empa, Swiss Federal Laboratories for Materials Science & Technology, CH-8600 Dübendorf, Switzerland
3. Department of Chemistry & Biochemistry, Montana State University, Bozeman, Montana 59717, United States
4. Nanotech@Surfaces Laboratory, Empa, Swiss Federal Laboratories for Materials Science and Technology, 8600 Dübendorf, Switzerland