1. Department of Chemistry, University of North Bengal, Darjeeling-734013, India
2. Department of Chemical Sciences, National Institute of Science Education and Research, Bhubaneswar 752050, India
3. Department of Physics, Jadavpur University, Kolkata-700032, India
4. Energy and Environment Unit, Institute of Nano Science and Technology, Mohali 140306, India
5. Department of Chemistry, University of Burdwan, Burdwan 713104, India