1. School of Materials Science and Engineering; Nanyang Technological University; 50 Nanyang Avenue 639798 Singapore
2. Energy Research Institute (ERI@N); Interdisciplinary Graduate School; Nanyang Technological University; 50 Nanyang Drive Singapore 637553 Singapore
3. Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM); Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM); Nanjing Tech University (NanjingTech); 2100 Nanjing China
4. Institute of Materials Research and Engineering; A*STAR (Agency for Science, Technology and Research); 2 Fusionopolis Way, Innovis #08-03 Singapore 138634 Singapore
5. Institute for Superconducting and Electronic Materials; Australian Institute for; Innovative Materials; University of Wollongong; NSW 2522 Australia