1. School of Physics and OptoelectronicsXiangtan UniversityXiangtanHunan411105People's Republic of China
2. School of Physics and ElectronicsHunan Normal UniversityChangsha410081People's Republic of China
3. Institute of Microelectronics of Chinese Academy of SciencesBeijing100029People's Republic of China
4. Hunan Engineering Laboratory for Microelectronics, Optoelectronics and System on A ChipXiangtanHunan411105People's Republic of China
5. SuperESD Microelectronics Technology CO., LTD.ChangshaHunan410100People's Republic of China