Affiliation: | 1. Department of Physics, Govt. Hr. Sec. School, Saruguvalayapatti, Melur-625 109, Madurai, India;2. Center for Environmental Studies/Green Energy Center, Department of Environmental Science and Engineering, College of Engineering, Kyung Hee University, Seocheon-dong 1, Giheung-gu, Yongin-Si, Gyeonggi-Do, 446-701, China;3. Department of Physics, Govt. Arts and Science College, Melur-625 106, Madurai, India |