1. State Key Laboratory of Environmental Friendly Energy Materials
2. School of Materials Science and Engineering
3. Southwest University of Science and Technology
4. Mianyang
5. P. R. China
6. Ecomaterials and Renewable Energy Research Center
7. School of Physics
8. National Laboratory of Solid State Microstructures
9. Nanjing University
10. Nanjing
11. Key Laboratory of Solid Waste Treatment and Resource Recycle of Ministry of Education