1. Materials and Life Science Research Division
2. Korea Institute of Science and Technology (KIST)
3. Seoul 02792
4. South Korea
5. Department of Materials Science and Engineering
6. Division of Electronics and Electrical Engineering
7. Dongguk University
8. Seoul 04620
9. Yonsei University
10. Seoul 03722
11. Center for Opto-Electronic Materials and Devices
12. Post-Silicon Semiconductor Institute
13. Department of Nanomaterials and Nano Science