1. School of Materials Science and Engineering, Nanyang Technological University, Nanyang Avenue, Singapore 639798
2. Energy Research Institute @NTU (ERI@N), Research Techno Plaza, X-Frontier Block, Level 5, 50 Nanyang Drive, Singapore 637553
3. Department of Life Sciences, Imperial College London, London, United Kingdom
4. Laboratory of Photonics and Interfaces, Department of Chemistry and Chemical Engineering, Swiss Federal Institute of Technology, Station 6, CH-1015 Lausanne, Switzerland