1. College of Big Data and Information Engineering, Guizhou University, Huaxi Road, Huaxi District, Guiyang, Guizhou550025, P. R. China
2. Engineering Research Center of Semiconductor Power Device Reliability, Ministry of Education, Guizhou University, Huaxi Road, Huaxi
District, Guiyang, Guizhou550025, P. R. China