1. Functional and Renewable Energy Materials Laboratory Indian Institute of Technology Ropar Rupnagar Punjab 140001 India
2. Department of Physics Indian Institute of Technology Bhilai GEC Campus, Sejbahar Raipur Chhattisgarh 492015 India
3. Max Planck Institute for Intelligent Systems Heisenbergstrasse 3 Stuttgart 70569 Germany
4. Institute of Physical Chemistry University of Stuttgart Pfaffenwaldring 55 Stuttgart 70569 Germany