1. Department of Physics, College of Science, King Khalid University , Abha, Saudi Arabia
2. Research Center for Advanced Materials Science (RCAMS), King Khalid University , Abha, Saudi Arabia
3. Department of Organic and Nano System Engineering, Konkuk University , Seoul, South Korea
4. Department of Chemistry, Dr. N.G.P. Institute of Technology , Coimbatore, India
5. Department of Chemistry, COMSATS Institute of Information Technology , Abbottabad, Pakistan
6. Department of Chemistry, National Institute of Technology Patna , Patna, India