1. IBS Center for Integrated Nanostructure Physics; Institute for Basic Science (IBS); Sungkyunkwan University; Suwon 440-746 Republic of Korea
2. Department of Energy Science; Sungkyunkwan University; Suwon 440-746 Korea
3. Department of Chemistry; Sungkyunkwan University; Suwon 440-746 Korea
4. Division of Molecular Modeling; Center for Innovative Materials and Architectures; Vietnam National University; Ho Chi Minh City 721337 Vietnam
5. New Industry Creation Hatchery Center; Tohoku University; Sendai 980-8579 Japan