Affiliation: | 1. Integrated Science Education and Research Centre, Siksha-Bhavana, Visva-Bharati, Santiniketan 731 235, India;2. Department of Physics, M S Ramaiah Institute of Technology, Bengaluru, India;3. Center for Computational Research in Clean Energy Technologies, Sree Chitra Thirunal College of Engineering, Pappanamcode, Trivandrum, India |