1. Joint
Center for Artificial Photosynthesis, California Institute of Technology, Pasadena, California 91125, United States
2. Molecular
Foundry, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
3. Department
of Physics, University of California, Berkeley, California 94720, United States
4. Department
of Physics, Temple University, Philadelphia, Pennsylvania 19122, United States
5. Joint Center
for Artificial Photosynthesis, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
6. Environmental
Energy Technologies 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
8. Kavli Energy NanoSciences Institute at Berkeley, Berkeley, California 94720, United States