1. Photovoltaic Metrology Section, Advanced Materials and Device Metrology Division, CSIR-National Physical Laboratory, Dr K. S. Krishnan Marg, New Delhi 110012, India
2. Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
3. School of Engineering, RMIT University, Melbourne, VIC 3000, Australia
4. Department of Energy Science and Engineering, Indian Institute of Technology Delhi, New Delhi 110016, India