1. Department of Chemistry, University of California—Berkeley, Berkeley, California 94720, United States
2. Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
3. Kavli Energy NanoSciences Institute, Berkeley, California 94720, United States
4. Berkeley Global Science Institute, Berkeley, California 94720, United States
5. Department of Chemical and Biomolecular Engineering, University of South Alabama, Mobile, Alabama 36688, United States
6. UC Berkeley−KACST Joint Center of Excellence for Nanomaterials for Clean Energy Applications, King Abdulaziz City for Science and Technology, Riyadh 11442, Saudi Arabia