1. KU‐KIST Graduate School of Converging Science and Technology Korea University 145 Anam‐ro, Seongbuk‐gu Seoul 02841 Republic of Korea
2. Department of Chemistry Rice University 6100 Main Street Houston 77005 Texas USA
3. Department of Integrative Energy Engineering Korea University 145 Anam‐ro, Seongbuk‐gu Seoul 02841 Republic of Korea
4. Center for Neuromorphic Engineering Korea Institute of Science and Technology Seoul 02792 Republic of Korea