1. Department of Chemistry, University of California, Berkeley, California 94720, United States
2. State Key Lab of Precision Measurement Technology & Instrument, Department of Precision Instrument, Tsinghua University, Beijing 100084, China
3. Department of Chemistry and Chemical Biology, University of California Merced, 5200 North Lake Road, Merced, California 95343, United States
4. Joint Center for Artificial Photosynthesis, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States