1. Department of Photonics, National Cheng Kung University, Tainan 701, Taiwan
2. National Synchrotron Radiation Research Center, Hsinchu 300, Taiwan
3. Fraunhofer Institute for Solar Energy Systems ISE, Heidenhofstrasse 2, Freiburg 79110, Germany
4. UVSOR Synchrotron, Institute for Molecular Science, Myodaiji, Okazaki 444-8585, Japan
5. Department of Applied Materials and Optoelectronic Engineering, National Chi Nan University, Nantou 54561, Taiwan
6. Hierarchical Green-Energy Materials (Hi-GEM) Research Center, National Cheng Kung University, Tainan 701, Taiwan
7. Core Facility Center (CFC), National Cheng Kung University, Tainan 701, Taiwan