1. Department of Physics, Sri Ramakrishna Mission Vidyalaya College of Arts and Science, Coimbatore 641 020, India
2. Department of Chemistry, Sri Ramakrishna Mission Vidyalaya College of Arts and Science, Coimbatore 641 020, India
3. Faculty of Automatic Control and Computer Engineering, Gheorghe Asachi Technical University of Iasi, Blvd. Dimitrie Mangeron, no. 67, 700050 Iasi, Romania
4. Center for Nanomaterial & Energy Devices, Swami Ramanand Teerth Marathwada University, Dnyanteerth, Vishnupuri, Nanded, 431606, India
5. Biological and Chemical Research Centre, Faculty of Chemistry, University of Warsaw, Zwirki i Wigury 101, 02-089 Warsaw, Poland
6. Faculty of science and engineering, Manchester metropolitan University, Chester street, Manchester, M1 5GD, UK