1. School of Electrical Engineering, Xi’an University of Technology, Xi’an, Shanxi 710048, China
2. College of Physics and Electronic Engineering Information, Wenzhou University, Wenzhou, Zhejiang 325035, China
3. Materials Physics Laboratory, Department of Physics, Faculty of Science, Prince of Songkla University (PSU), Songkhla 90112, Thailand
4. Université de Toulouse, UPS, INPT, LAPLACE (Laboratoire Plasma et Conversion d’Energie), 118 route de Narbonne, F-31062 Toulouse Cedex 9, France