1. School of Electronic Information and Electrical Engineering, Institute of Advanced Study, Chengdu University, Chengdu 610106, China
2. School of Integrated Circuit Science and Engineering (Exemplary School of Microelectronics), University of Electronic Science and Technology of China, Chengdu 611731, China
3. School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu 610054, China
4. Chengdu Research Institute of UESTC, Chengdu 610207, China