1. State Key Laboratory of Electronic Thin Films and Integrated Devices
2. School of Optoelectronic Information
3. University of Electronic Science and Technology of China (UESTC)
4. Chengdu 610054
5. P. R. China
6. Department of Chemical and Biomolecular Engineering
7. New York University
8. Tandon School of Engineering
9. Brooklyn
10. USA
11. Department of Chemical and Environmental Engineering
12. Yale University
13. New Haven
14. Department of Materials Science and Engineering
15. Johns Hopkins University
16. Baltimore