1. Nanomaterials Research Group, Physics Division, PINSTECH, Islamabad 44000, Pakistan
2. School of Chemical and Materials Engineering, National University of Sciences and Technology (NUST), Islamabad 44000, Pakistan
3. College of Chemistry and Chemical Engineering, Northeast Petroleum University, Daqing, 163318, P. R. China
4. Central Analytical Facility Division, PINSTECH, Islamabad 44000, Pakistan
5. School of Resources and Materials, Northeastern University at Qinhuangdao, Qinhuangdao, 066004, P. R. China
6. Theoretical Physics Division, PINSTECH, Islamabad 44000, Pakistan
7. Chemistry Division, PINSTECH, Islamabad 44000, Pakistan
8. National Institute of Lasers and Optronics College, Pakistan Institute of Engineering and Applied Sciences, Nilore, Islamabad 45650, Pakistan
9. Materials Division, PINSTECH, Islamabad 44000, Pakistan