1. Photovoltaic Metrology Section, Advanced Materials & 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. CSIR Headquarters, 2, Rafi Marg, Anusandhan Bhawan, New Delhi 110001, India