1. Center for Advanced Materials Research, Research Institute of Sciences and Engineering, University of Sharjah, Sharjah 27272, United Arab Emirates
2. Department of Physics, Sathyabama Institute of Science & Technology, Chennai 600 119, Tamil Nadu, India
3. Department of Chemistry, Sathyabama Institute of Science & Technology, Chennai 600 119, Tamil Nadu, India
4. Department of Applied Physics & Astronomy, College of Sciences, University of Sharjah, Sharjah 27272, United Arab Emirates