1. Centre for Disruptive Photonic Technologies; School of Physical and Mathematical Sciences; Nanyang Technological University; Singapore 637371
2. School of Materials Science and Engineering; Nanyang Technological University; Singapore 639798
3. Energy Research Institute @ NTU; ERI@N; Interdisciplinary Graduate School; Nanyang Technological University; Singapore 639798
4. Division of Physics and Applied Physics; School of Physical and Mathematical Sciences (SPMS); Nanyang Technological University; 21 Nanyang Link Singapore 637371
5. ERI@N; Research Techno Plaza; X-Frontier Block, Level 5, 50 Nanyang Drive Singapore 637553
6. Materials Science and Engineering Program State University of New York at Binghamton Binghamton; NY 13902 USA
7. Institute of Atomic and Molecular Sciences; Academia Sinica; Taipei 10617 Taiwan
8. Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM); Jiangsu National Synergistic Innovation Center for Advanced Materials (SICAM); Nanjing Tech University (Nanjing Tech); 30 South Puzhu Road Nanjing 211816 P. R. China