1. Department of Physics, Yeungnam University, Gyeongsan, Gyeongbuk 38541, South Korea
2. The University of Da Nang, University of Science and Technology, Da Nang 550000, Vietnam
3. Center for Advanced Chemistry, Institute of Research and Development, Duy Tan University, 03 Quang Trung, Da Nang 550000, Vietnam
4. Faculty of Natural Sciences, Duy Tan University, 03 Quang Trung, Da Nang 550000, Vietnam