1. Department of Chemistry Education, Korea National University of Education (KNUE), Cheongju, Chungbuk 28173, Republic of Korea
2. MTA-BME Condensed Matter Physics Research Group, Budapest University of Technology and Economics, Budapest 1111, Hungary
3. Department of Chemistry, Pusan National University, Busan 46241, Republic of Korea
4. Department of Physics, Budapest University of Technology and Economics, Budapest 1111, Hungary