1. School of Materials Science and Chemical Engineering, Harbin University of Science and Technology, Harbin 15000, P. R. China
2. The Key Laboratory of Space Photoelectric Detection and Perception, Nanjing University of Aeronautics and Astronautics, Nanjing 210000, P. R. China
3. State Key Laboratory of Crystal Material, Shandong University, Jinan 250100, P. R. China