1. Condensed Matter Science and Technology Institute, Department of Physics, Harbin Institute of Technology, Harbin 150001, People’s Republic of China
2. Key Laboratory for Photonic and Electronic Bandgap Materials, Ministry of Education, School of Physics and Electronic Engineering, Harbin Normal University, Harbin 150025, People’s Republic of China
3. Department of Chemistry and Chemical Biology, Cornell University, Ithaca, New York 14850, United States
4. Center for Engineering Training and Basic Experimentation, Heilongjiang University of Science and Technology, Harbin 150022, People’s Republic of China