1. Graphene Research Institute
2. Sejong University
3. Seoul 143-747, Korea
4. Department of Physics
5. Department of Nano Science and Technology
6. Graduate School of Convergence Science and Technology
7. Seoul National University
8. Suwon 443-270, Korea
9. Energy Semiconductor Research Center
10. Advanced Institutes of Convergence Technology
11. Department of Materials Science and Engineering