1. Shenzhen Key Laboratory of Special Functional Materials
2. College of Materials Science and Engineering
3. Shenzhen University
4. Shenzhen 518060
5. P. R. China
6. School of Chemical Engineering and Technology
7. Harbin Institute of Technology
8. Harbin 150001
9. Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education & Guangdong Province
10. College of Optoelectronic Engineering
11. Department of Physics
12. South University of Science and Technology of China
13. Shenzhen 518055
14. Department of Applied Physics
15. The Hong Kong Polytechnic University
16. Kowloon