1. Department of Physics, Yeungnam University, Gyeongsan, Gyeongbuk 38541, Republic of Korea
2. Department of Physics, Institute of Science, Banaras Hindu University, Varanasi 221005, Uttar Pradesh, India
3. Department of Electronics Engineering, Incheon National University, Incheon 22012, Republic of Korea
4. Department of Chemistry, Harcourt Butler Technical University, Kanpur 208002, Uttar Pradesh, India
5. Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi 221005, Uttar Pradesh, India
6. Mads Clausen Institute, NanoSYD, University of Southern Denmark, Alsion 2, 6400 Sønderborg, Denmark