1. Applied Materials Institute for BIN Convergence, Department of BIN Convergence Technology and Department of Polymer Nano Science and Technology, Jeonbuk National University, Jeonju, Korea
2. LG Display Co., Ltd, Gumi, Gyungbuk, Korea
3. Center for Integrated Nanostructure Physics(CINAP), Institute for Basic Science(IBS), Sungkyunkwan University, Suwon, Korea
4. Department of Energy Science, Sungkyunkwan University, Suwon, Korea