1. Functional Materials and Energy Devices Laboratory, Department of Physics and Nanotechnology, SRM Institute of Science and Technology, Kattankulathur, Potheri, Chengalpattu603 203, Tamil Nadu, India
2. Nanotechnology Research Centre, Faculty of Engineering and Technology, SRM Institute of Science and Technology, Kattankulathur, Chengalpattu603 203, Tamil Nadu, India
3. Centre for Nanoscience and Nanotechnology, Department of Physics, Bharathidasan University, Tiruchirappalli620 024, Tamil Nadu, India
4. Department of Physics, Khalifa University of Science and Technology, Abu Dhabi127788, United Arab Emirates
5. Center for Catalysis and Separation (CeCaS), Khalifa University of Science and Technology, Abu Dhabi127788, United Arab Emirates