1. Low Dimensional Materials Laboratory; Department of Physics; Bharathiar University; Coimbatore, Tamil Nadu India
2. UGC-CPEPA Centre for Advanced Studies in Physics for the development of Solar Energy Materials and Devices, Department of Physics; Bharathiar University; Coimbatore, Tamil Nadu India
3. Department of Structural Chemistry of Solids; Frantsevych Institute for Problems of Materials Science; National Academy of Sciences of Ukraine; 3 Krzhyzhanivsky Street UA-03142 Kyiv Ukraine
4. Department of Nanoscience and Technology; Sri Ramakrishna Engineering College; Coimbatore, Tami Nadu India