1. State Key Laboratory of Optoelectronic Materials and Technologies
2. School of Physics
3. Sun Yat-Sen University
4. Guangzhou 510275
5. China
6. Institute of Optoelectronic Material and Technology
7. South China Normal University
8. Guangzhou 510631
9. School of Electronics and Information Technology
10. The Institute of Applied Physics and Materials Engineering
11. University of Macau
12. Avenida da Universidade
13. Taipa