| Affiliation: | 1. Graduate Institute of Electro‐Optical Engineering and Department of Electrical Engineering, National Taiwan University, Taipei 106, Taiwan (ROC);2. Institute of Physics, Academia Sinica, Nankang, 115, Taipei, Taiwan (ROC);3. Department of Material Science, National University of Tainan, Tainan 700, Taiwan (ROC);4. Institute of Physics, Academia Sinica, Nankang, 115 Taipei, Taiwan (ROC);5. Department of Electrical Engineering, National Chung Hsing University, Taichung 402, Taiwan (ROC) |
