1. High Temperature and Energy Materials Laboratory, Department of Metallurgical Engineering and Materials Science, Indian Institute of Technology Bombay (IITB), Mumbai 400076, India
2. Nanomaterials Laboratory, Department of Physics, Indian Institute of Technology Bombay (IITB), Mumbai 400076, India
3. National Centre for Photovoltaic Research and Education, Indian Institute of Technology Bombay (IITB), Mumbai 400076, India
4. Department of Physics, School of Natural Sciences, Shiv Nadar University, Gautam Buddha
Nagar, Uttar Pradesh 201314, India