1. Key Laboratory of Opto-Electronic Technology and Intelligent Control (Ministry of Education)
2. Lanzhou Jiaotong University
3. Lanzhou 730070
4. China
5. Printable Electronics Research Center
6. Suzhou Institute of Nano-Tech and Nano-Bionics
7. Chinese Academy of Sciences
8. Suzhou 215123
9. School of Chemical and Biological Engineering