1. Department
of Chemistry, University of California, Berkeley, California 94720, United States
2. The Hamburg Centre for Ultrafast Imaging, Luruper Chaussee 149, 22761 Hamburg, Germany
3. Chemical
Sciences Division, Lawrence Berkeley National Lab, Berkeley, California 94720, United States
4. Kavli
Energy NanoScience Institute, University of California, Berkeley, and Lawrence Berkeley National Lab, Berkeley, California 94720, United States
5. Institute
of Physical Chemistry, University of Hamburg, Grindelallee 117, 20146 Hamburg, Germany
6. Materials
Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
7. Department
of Materials Science and Engineering, University of California, Berkeley, California 94720, United States