1. Beijing National Laboratory for Molecular Sciences
2. Institute of Chemistry
3. Chinese Academy of Sciences
4. Beijing 100190
5. P. R. China
6. Key Laboratory for the Physics and Chemistry of Nanodevices
7. Department of Electronics
8. Peking University
9. Beijing 100871
10. Beijing Key Laboratory for Science and Application of Functional Molecular and Crystalline Materials
11. Department of Chemistry
12. University of Science and Technology Beijing
13. Beijing 100083
14. SKLSM
15. Institute of Semiconductors Chinese Academy of Sciences