1. New Energy Technology Engineering Laboratory of Jiangsu Province & School of Science, Nanjing University of Posts and Telecommunications, Nanjing 210023, China
2. School of Physical Sciences, University of Science and Technology of China, Hefei 230026, China
3. College of Electronic and Optical Engineering, Nanjing University of Posts and Telecommunications, Nanjing 210023, China
4. College of Electronic and Information Engineering, West Anhui University, Lu'an 237012, China
5. Institute for Computational Materials Science, Joint Center for Theoretical Physics, School of Physics and Electronics, Henan University, Kaifeng 475004, China