1. School of Information Engineering, Southwest University of Science Technology, Mianyang, China
2. Science and Technology on Reliability Physics and Application of Electronic Component Laboratory, China Electronic Product Reliability and Environmental Testing Research Institute, Guangzhou, China
3. School of Physics and Optoelectronic Engineering, Guangdong University of Technology, Guangzhou, China
4. School of Electronics and Information Engineering, South China Normal University, Foshan, China