1. Luminescent Materials Research Lab (LMRL) Department of Applied Physics Delhi Technological University New Delhi 110042 India
2. Centre for Nanoscience and Molecular Medicine Amrita Vishwa Vidyapeetham Kochi Kerala 682024 India
3. Centre for Nanotechnology Research Vellore Institute of Technology Vellore Tamil Nadu 632014 India
4. Luminescent Materials and Devices Group, Department of Physics National Institute of Technology Warangal Telangana 506004 India