1. Research Center for Crystal Materials, Xinjiang Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Urumqi 830011, China
2. Institution Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
3. Molecular Photoscience Research Center, Kobe University, Nada, Kobe, 657-8501, Japan
4. Center for Condensed Matter Sciences, National Taiwan University, 1 Roosevelt Road, Sec. 4, Taipei, 10617, Taiwan
5. Research Institute of Electronics, Shizuoka University, Hamamatsu, Shizuoka 432-8011, Japan