Affiliation: | 1. Semiconductors Laboratory, Department of Physics, GND University, Amritsar 143005, India;2. Department of Physics, DAV University, Sarmastpur, Jalandhar 144012, India;1. Research Institute for Solar and Sustainable Energies (RISE), Gwangju Institute of Science and Technology, Gwangju 500-712, Republic of Korea;2. Department of Materials & Energy Engineering, Kyungwoon University, Gumi, Gyeongbuk, 730-739, Republic of Korea;3. Department of Physics, KyungPook National University, Daegu, 702-701, Republic of Korea |