1. Thin Film Lab as Part of Materials and Surface Engineering Group, Department of Metallurgical Engineering, NED University of Engineering and Technology, Karachi 75270, Pakistan
2. State Key Joint Laboratory of ESPC, School of Environment, Tsinghua University, Beijing 100084, China
3. Department of Environmental Engineering, NED University of Engineering and Technology, University Road, Karachi 75270 , Pakistan
4. Department of Telecommunication Engineering, Dawood University of Engineering and Technology, Karachi 74800, Pakistan
5. Departments of Mechanical & Energy Systems Engineering, Faculty of Engineering and Informatics, University of Bradford, Bradford BD7 1DP, U.K.
6. Departments of Physics and Astronomy, College of Science, King Saud University, Riyadh 11451, Saudi Arabia