1. Indian Institute of Engineering Science and Technology, Shibpur, Howrah 711103, West Bengal, India
2. Department of Chemistry, Jadavpur University, Kolkata 700032, India
3. School of Materials Science and Nanotechnology, Jadavpur University, Kolkata 700032, India
4. Thin Film Photovoltaic Lab, School of Electronics Engineering, KIIT-Deemed to Be University, Bhubaneswar 751024, Odisha, India