1. Solar & Photovoltaics Engineering Research Center, Physical Science and Engineering Division, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Kingdom of Saudi Arabia
2. State
Key Laboratory of Precision Spectroscopy, School of Physics and Materials
Science, East China Normal University (ECNU), Shanghai 200062, People’s Republic of China
3. Institut
für Chemie, Universität Potsdam, Potsdam 14476, Germany