1. Department of Chemical and Biomolecular Engineering, National University of Singapore, 117585, Singapore
2. Solar Energy Research Institute of Singapore (SERIS), National University of Singapore, 117574, Singapore
3. Joint School of National University of Singapore and Tianjin University, International Campus of Tianjin University, Fuzhou, China
4. School of Materials Science and Engineering, Tianjin Key Laboratory of Composite and Functional Materials, Tianjin University, Tianjin 300350, China