1. Department of Physics, University of Okara, Okara 56300, Pakistan
2. Clean Energy Research Laboratory (CERL), Department of Physics, COMSATS University Islamabad, Lahore Campus, Lahore 54000, Pakistan
3. Department of Chemistry, University of Okara, Okara 56300, Pakistan
4. Materials Simulation Research Laboratory (MSRL), Department of Physics, Bahauddin Zakariya University, Multan 60800, Pakistan
5. Department of Physics, University of Education, Lahore 54000, Pakistan
6. Department of Physics, Chemistry and Biology (IFM), Linköping University, Linköping 581 83, Sweden