1. National Laboratory of Solid State Microstructures
2. Collaborative Innovation Center of Advanced Microstructures
3. School of Physics
4. Nanjing University
5. Nanjing 210093
6. State Key Laboratory of Environmental Friendly Energy Materials
7. School of Materials Science and Engineering
8. Southwest University of Science and Technology
9. Mianyang
10. P. R. China
11. College of Environment and Chemical Engineering
12. Dalian University
13. Dalian
14. Faculty of Informatics and Engineering
15. the University of Electro-Communications
16. Tokyo 182-8585
17. Japan
18. Center of Excellence for Advanced Materials Research, Chemistry of Department
19. Faculty of Science
20. King Abdulaziz University
21. Jeddah 21589
22. Saudi Arabia