1. KAUST Solar Center King Abdullah University of Science and Technology (KAUST) Thuwal 23955‐6900 Saudi Arabia
2. KAUST Catalysis Center King Abdullah University of Science and Technology (KAUST) Thuwal 23955‐6900 Saudi Arabia
3. Department of Physics National Technical University of Athens Athens GR‐15780 Greece
4. Core Labs, King Abdullah University of Science and Technology (KAUST) Thuwal 23955‐6900 Saudi Arabia
5. State Key Laboratory of Rare Earth Resource Utilization Changchun Institute of Applied Chemistry Chinese Academy of Sciences Changchun 130022 P. R. China