1. State Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun, China
2. Printable Electronics Research Center, Nano-Devices and Materials Division, Suzhou Institute of Nano-tech and Nano-bionics, Chinese Academy of Sciences, Suzhou, China
3. College of Instrumentation and Electrical Engineering, Jilin University, Changchun, China