1. Key Laboratory of Interface Science and Engineering in Advanced Materials
2. Ministry of Education
3. Taiyuan University of Technology
4. Taiyuan 030024
5. China
6. Shanxi Province Key Laboratory of Microstructure Functional Materials Institute of Solid State Physical
7. School of Physics and Electronic Science
8. Shanxi Datong University
9. Datong
10. Key Laboratory for Organic Electronics and Information Displays & Institute of Advanced Materials
11. Nanjing University of Posts & Telecommunications
12. Nanjing 210023
13. Microelectronics Research Canter and Electrical & Computer Engineering Department
14. Iowa State University
15. Ames
16. USA
17. Ames Laboratory
18. USDOE and Physics & Astronomy Department
19. State Key Laboratory of Electronic Thin Films and Integrated Devices
20. School of Optoelectronic Science and Engineering
21. University of Electronic Science and Technology of China (UESTC)
22. Chengdu
23. P. R. China