1. Centre of Excellence on Solar Cells & Renewable Energy, School of Basic Sciences and Research, Sharda University, Greater Noida – 201310, U.P., India
2. Department of Chemistry, Sardar Patel University, Vallabh Vidyanagar, Anand – 388120, Gujarat, India
3. Department of Physics, Mahila Mahavidyalaya, Banaras Hindu University, Varanasi – 221005, U.P., India