Affiliation: | 1. Department of Physics &2. Astronomy, Science College, King Saud University, Riyadh, Saudi Arabia;3. Department of Physics, Faculty of Science, Benha University, Benha, Egypt;4. Department of Physics, Faculty of Science, King Khalid University, Abha, Saudi Arabia;5. Physics Department, Nano-Science &6. Semiconductor Labs, Faculty of Education, Ain Shams University, Roxy, Cairo, Egypt;7. Department of Physics, College of Science, Princess Nora Bint Abdulrahman University, Riyadh, Saudi Arabia;8. Physics Department, College of Sciences and Humanities, Salman Bin Abdulaziz University, Alkharj, Saudi Arabia |