1. Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543, Singapore.
2. Institute of High Performance Computing, A*STAR (Agency for Science, Technology and Research), 1 Fusionopolis Way, 16-16 Connexis North, Singapore 138632, Singapore.
3. Institute of Materials Research and Engineering, A*STAR, 3 Research Link, Singapore 117602, Singapore.
4. Singapore University of Technology and Design, 20 Dover Drive, Singapore 138682, Singapore.
5. Graphene Research Center, National University of Singapore, 2 Science Drive 3, Singapore 117542, Singapore.
6. Solar Energy Research Institute of Singapore (SERIS), National University of Singapore, Singapore 117574, Singapore.