1. Department of Physics, Aliah University, Newtown, Kolkata 700156, India
2. Department of Chemistry, Abhedananda Mahavidyalaya, University of Burdwan, Birbhum, Sainthia, West Bengal 731234, India
3. Elettra-Sincrotrone Trieste S.C.p.A., S.S. 14 km 163.5 in Area Science Park, Basovizza, 34149 Trieste, Italy
4. International and Inter University Centre for Nanoscience and Nanotechnology, Mahatma Gandhi University, 686560 Kottayam, India
5. Department of Physics, Abhedananda Mahavidyalaya, University of Burdwan, Birbhum, Sainthia, West Bengal 731234, India