1. Thin Film Materials Laboratory, Department of Physics, Shivaji University, Kolhapur, India;
2. Department of Physics, Karmveer Hire Arts, Science, Commerce and Education College, Gargoti, Tal-Bhudargad, Dist-Kolhapur, India;
3. Department of Physics, Sanjay Ghodawat University, Kolhapur;
4. Department of Physics, Institute of Chemical Technology, Mumbai;
5. School of Nanoscience and Technology, Shivaji University, Kolhapur, India
6. Department of Materials Science, Chonnam National University, Gwangju, Republic of Korea;