1. Department of Chemistry, California Institute of Technology, Pasadena, California 91125, United States
2. Liquid Sunlight Alliance, California Institute of Technology, Pasadena, California 91125, United States
3. Department of Applied Physics and Material Science, California Institute of Technology, Pasadena, California 91125, United States
4. Department of Chemistry, University of Massachusetts, Amherst, Massachusetts 01003, United States