| Affiliation: | 1. State Key Discipline Laboratory of Wide BandGap Semiconductor Technology, School of Microelectronics, Xidian University, Xi''an 710071, PR China;2. School of Physics and Optoelectronic Engineering, Xidian University, Xi''an 710071, PR China;3. Faculty of Science, University of Paris-Sud, Paris 91400, France;4. Faculty of Information Engineering & Automation, Kunming University of Science and Technology, Kunming 650051, PR China;1. Unité de physique des dispositifs à semi-conducteurs, Tunis EL MANAR University, 2092 Tunis, Tunisia;2. Faculté des Sciences de Bizerte, Université de Carthage, Zarzouna 7021, Tunisia;3. Physics Department, Faculty of Arts and Sciences, Marmara University, Göztepe, Istanbul 34722, Turkey;1. School of Chemistry & Physics, University of KwaZulu-Natal, Pietermaritzburg Campus, Private Bag X01, Scottsville 3209, South Africa;2. Department of Physics and Engineering Physics, Obafemi Awolowo University Ile-Ife, Nigeria;1. Laboratoire de Physique de la Matière Condensée, Faculté des Sciences de Tunis, Tunis-El Manar University, 2092, Tunisia;2. King Khalid University, Faculty of Science, Physics, Department, P.O. Box 9004, Abha 61413, Saudi Arabia;3. Laboratoire de Physique des Rayonnements, Département de Physique, Faculté des Sciences, Université Badji Mokhtar, Annaba 23000, Algeria |
