1. Berkeley Educational Alliance for Research in Singapore (BEARS), Ltd., 1 Create Way, 138602, Singapore
2. Saule Research Institute, Wroclaw Technology Park, Dunska 11, Sigma Building, Wroclaw 54-130, Poland
3. Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
4. College of Materials Science and Optoelectronic Technology, University of Chinese Academy of Sciences, Beijing, 100049, People’s Republic of China
5. Department of Chemistry Science, University of Chinese Academy of Sciences, Beijing, 100049, People’s Republic of China
6. Department of Materials Science and Engineering, University of California, Berkeley, California 94720, United States