1. School of Computing and Electrical Engineering, Indian Institute of Technology (IIT) 1 , Mandi, Himachal Pradesh 175005, India
2. School of Chemical Sciences, Indian Institute of Technology (IIT) 2 , Mandi, Himachal Pradesh 175005, India
3. Institute of Semiconductor Engineering, University of Stuttgart 3 , Stuttgart 70569, Germany
4. (Former Address) School of Basic Sciences, Indian Institute of Technology (IIT) 4 , Mandi, Himachal Pradesh 175005, India