1. School of Physics
2. University of Electronic Science and Technology of China
3. Chengdu 610054
4. China
5. Chinese Acad. Sci.
6. Beijing Institute of Nanoenergy and Nanosystems
7. Multidisciplinary Nanotechnology Centre
8. College of Engineering
9. Swansea University
10. Swansea
11. UK
12. Inst. Chem.
13. Beijing Natl. Lab Mol. Sci.
14. CAS Key Lab Organ Solids
15. Beijing 100190