1. Optoelectronic Convergence Research Center and Department of Materials Science and Engineering, Chonnam National University, Gwangju 61186, Republic of Korea
2. Future Agricultural Research Division, Rural Research Institute, Korea Rural Community Corporation, Ansan-Si 15634, Republic of Korea
3. Department of Physics, Incheon National University, Incheon 22012, Republic of Korea
4. Solar Energy R&D Department, Green Energy Institute, Mokpo 58656, Republic of Korea