1. School of Materials Science and Engineering
2. Nanyang Technological University Singapore
3. Singapore 639798
4. Singapore
5. Department of Physics
6. South University of Science and Technology of China
7. Shenzhen 518055
8. China
9. Division of Chemistry and Biological Chemistry
10. School of Physical and Mathematical Sciences
11. Nanyang Technological University
12. Graduate School of Materials Science
13. Nara Institute of Science and Technology
14. Ikoma 630-0192
15. Japan
16. Tianjin Key Laboratory of Molecular Optoelectronic Sciences
17. Department of Chemistry
18. School of Science & Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)
19. Tianjin University
20. Tianjin 300072