1. Key Laboratory of Organic Polymer Photoelectric Materials, School of Sciences, Xi’an Key Laboratory of Advanced Photo-Electronics Materials and Energy Conversion Device, Xijing University, Xi’an, China
2. Department of Materials Physics and Chemistry, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, P.R. China
3. State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao, P.R. China