1. Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
2. Institute of Experimental Physics, TU Bergakademie Freiberg, D-09599 Freiberg, Germany
3. Deutsches Elektronen Synchrotron/DESY, D-22607 Hamburg, Germany
4. Chemical Sciences Division and Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
5. Institute for Solar Fuels, Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, 14109 Berlin, Germany
6. Joint Center for Artificial Photosynthesis, Lawrence Berkeley National Laboratory, California 94720, United States