1. Research Center for Crystal Materials, CAS Key Laboratory of Functional Materials and Devices for Special Environments, Xinjiang Technical Institute of Physics & Chemistry, CAS, and Xinjiang Key Laboratory of Electronic Information Materials and Devices, 40-1 South Beijing Road, Urumqi 830011, China
2. Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
3. Research Institute of Electronics, Shizuoka University, Hamamatsu, Shizuoka 432-8011, Japan
4. Molecular Photoscience Research Center, Kobe University, Nada, Kobe 657-8501, Japan
5. Center for Condensed Matter Sciences, National Taiwan University, 1 Roosevelt Road, Sec. 4, Taipei 10617, Taiwan
6. National Center for Theoretical Sciences, Taipei, 1 Roosevelt Road, Sec. 4, Taipei 10617, Taiwan