1. School of Materials Science and Engineering; Hefei University of Technology; Hefei 230009 Anhui China
2. Computational Astrophysics Laboratory; RIKEN, 2-1 Hirosawa Wako Saitama 351-0198 Japan
3. MIIT Key Laboratory of Advanced Display Materials and Devices; Institute of Optoelectronics & Nanomaterials, College of Materials Science and Engineering, Nanjing University of Science and Technology; Nanjing 210094 China