1. School of Advanced Materials Science and Engineering, Sungkyunkwan University (SKKU), Suwon 16419, Republic of Korea
2. Department of Electrical and Systems Engineering, University of Pennsylvania, Philadelphia, PA, USA
3. School of Mechanical Engineering, Sungkyunkwan University, Suwon 16419, Republic of Korea
4. Department of Materials Science and Engineering, Yonsei University, Seoul 03722, Republic of Korea
5. The Nanophotonics Research Center, Korea Institute of Science and Technology (KIST), Seoul 02792, Republic of Korea
6. KIST-SKKU Carbon-Neutral Research Center, Sungkyunkwan University, Suwon 16419, Republic of Korea
7. Korea Electric Power Research Institute, 34056 Daejeon, Republic of Korea
8. Department of Future Energy Engineering, Sungkyunkwan University, Suwon 16419, Republic of Korea
9. SKKU Institute of Energy Science & Technology (SIEST), Sungkyunkwan University, Suwon 16419, Republic of Korea