1. Graduate Institute of Photonics and Optoelectronics, National Taiwan University, Taipei 10617, Taiwan
2. Molecular Imaging Center, National Taiwan University, Taipei 10617, Taiwan
3. Department of Materials Science and Engineering, National Taiwan University, Taipei 10617, Taiwan
4. Institute of Electro-Optical Science and Engineering and Advanced Optoelectronic Technology Center, National Cheng Kung University, Tainan 70101, Taiwan
5. Institute of Physics and Research Center for Applied Sciences, Academia Sinica, Taipei 11529, Taiwan