1. Thin Film Device Fabrication & Characterisation Laboratory Department of Physics Sardar Patel University Vallabh Vidyanagar Gujarat 388120 India
2. Department of Physical Science P. D. Patel Institute of Applied Science CHARUSAT Campus Changa Gujarat 388421 India
3. Department of Physics The Maharaja Sayajirao University of Baroda Pratapgunj Vadodara Gujarat 390002 India