1. Department of Physics, Functional Nanomaterials Research Laboratory, Doon University, Dehradun, Uttarakhand, India
2. Department of Physics, Materials and Device Laboratory, Indian Institute of Technology Indore, Indore, India
3. Department of Physics, Thin Film Laboratory, IIT Delhi, New Delhi, India
4. Department of Chemistry, Doon University, Dehradun, Uttarakhand, India
5. Department of SENR, Doon University, Dehradun, Uttarakhand, India
6. Department of Science and Technology, IIT Delhi, New Delhi, India
7. Institute of Materials Research and Engineering, Agency for Science, Technology and Research (A*STAR), Fusionopolis, Singapore