1. Department of Physics, The University of Lahore, 53700, Pakistan
2. Department of physics, Deanship of educational services, Qassim university, Buraidah 51452, Saudi Arabia
3. Department of Chemistry, College of Science, King Khalid University, P.O. Box 9004, 61413 Abha, saudi Arabia
4. Department of Physics, Division of Science & Technology, University of Education Lahore, Lahore 54770, Pakistan