1. Laboratory of Inorganic ChemistryDepartment of Chemistry and Applied BiosciencesETH Zürich CH‐8093 Zürich Switzerland
2. Laboratory for Thin Films and PhotovoltaicsEmpaSwiss Federal Laboratories for Materials Science & Technology CH‐8600 Dübendorf Switzerland
3. Laboratory for High‐Performance CeramicsEmpaSwiss Federal Laboratories for Materials Science & Technology CH‐8600 Dübendorf Switzerland