1. Frontier Research Center for Matter Science and Technology, Department of Chemistry, National Tsing-Hua University, Hsinchu, Taiwan 30013, ROC
2. TSMC-NTHU Joint Research Center, National Tsing-Hua University, Hsinchu, Taiwan 30013, ROC
3. College of Semiconductor Research, ROC
4. Department of Electrical Engineering, National Tsing-Hua University, Hsinchu, Taiwan, ROC