1. School of Science, Nanjing University of Posts and Telecommunications, Nanjing, 210023, China
2. State Key Laboratory of Organic Electronics and Information Displays & Institute of Advanced Materials (IAM), Nanjing University of Posts & Telecommunications, Nanjing 210023, China
3. Institute for Computational Materials Science, Joint Center for Theoretical Physics (JCTP), School of Physics and Electronics, Henan University, Kaifeng, 475004, China
4. College of Physics Science and Technology, Yangzhou University, Yangzhou 225002, China