1. Materials
for Energy Conversion and Storage (MECS), Department of Chemical Engineering, Delft University of Technology, PO Box 5045, 2600 GA Delft, The Netherlands
2. Photovoltaics
and Thin Film Electronics Laboratory, Ecole Polytechnique Fédérale de Lausanne (EPFL), Rue de la Maladière 71b, 2000 Neuchatel, Switzerland
3. Institute
for Solar Fuels, Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, Hahn-Meitner-Platz 1, 14109 Berlin, Germany