1. Department of Physics, University of Barishal, Barishal 8200, Bangladesh
2. Department of Electrical and Mechanical Engineering, Nagoya Institute of Technology, Gokiso-cho, Showa-Ku, Nagoya 466-8555, Japan
3. Department of Materials Science and Engineering, University of Connecticut, Storrs, Connecticut 06269, United States
4. Department of Electrical and Electronic Engineering, Bangamata Sheikh Fojilatunnesa Mujib Science and Technology University, Jamalpur 2012, Bangladesh
5. Advanced Energy Materials and Solar Cell Research Laboratory, Department of Electrical and Electronic Engineering, Begum Rokeya University, Rangpur 5400, Bangladesh