1. School of Electronic Information and Electrical Engineering, Chengdu University, Chengdu 610106, China
2. Yangtze Delta Region Institute (Huzhou), University of Electronic Science and Technology of China, Huzhou 313001, China
3. School of Electronics and Information Technology (School of Microelectronics), Sun Yat-sen University, Guangzhou 510006, China
4. College of Material Science and Engineering, Sichuan University, Chengdu 610064, China
5. School of Integrated Circuits, Tsinghua University, Beijing 100084, China