1. King Abdullah University of Science and Technology (KAUST), KAUST Solar Center (KSC), Thuwal 23955, Saudi Arabia
2. Department of Chemistry, University of Oxford, Oxford, OX1 3TA, UK
3. Renewable and Sustainable Energy Institute, Department of Chemistry, and Department of Chemical and Biological Engineering, University of Colorado Boulder, Boulder, CO 80303, USA
4. Department of Organic Chemistry, Kaunas University of Technology, Kaunas LT-50254, Lithuania
5. Department of Physics, School of Applied Mathematical and Physical Sciences, National Technical University of Athens, Athens GR-15780, Greece
6. Department of Chemistry and Chemical Engineering, Chalmers University of Technology, Göteborg, SE-412 96, Sweden