1. School of Electronic Science and Engineering, University of Electronic Science and Technology of China,Chengdu,China
2. Shenzhen Institute for Advanced Study, University of Electronic Science and Technology of China,Shenzhen,China
3. The school of information science and technology, Southwest Jiaotong University,Chengdu,China
4. Institute of Semiconductors, Chinese Academy of Sciences,Beijing,China,100083
5. Jihua Laboratory,Foshan,China,528000
6. Chengdu Sino Microelectronics Technology Company, Ltd.,Chengdu,China,610094