1. Department of Energy Engineering; Ulsan National Institute of Science and Technology (UNIST); Ulsan 689-798 South Korea
2. Center for Polymers and Organic Solids; University of California Santa Barbara; Santa Barbara CA 93106 USA
3. Department of Chemistry; Korea University; Seoul 136-713 South Korea
4. Research Institute for Convergence of Basic Sciences; Department of Chemistry and Institute for Materials Design; Hanyang University; Seoul 133-791 South Korea
5. Department of Cogno-Mechatronis Engineering; Pusan National University; Pusan 627-706 South Korea
6. Department of Mechanical Design Engineering; Kangwon National University; Gangwon-do 25913 South Korea
7. Department of Physics; Ulsan National Institute of Science and Technology (UNIST); Ulsan 689-798 South Korea
8. Department of Physics and Energy Harvest Storage Research Center (EHSRC); University of Ulsan; Ulsan 680-749 South Korea