School of Materials Science and Engineering Tianjin Key Laboratory of Composite and Functional Materials Tianjin University Tianjin 300350 ChinaState Key Laboratory of Polymer Physics and Chemistry Changchun Institute of Applied Chemistry Chinese Academy of Sciences Changchun 130022 ChinaTianjin Key Laboratory of Molecular Optoelectronic Sciences Tianjin University Collaborative Innovation Center of Chemical Science and Engineering(Tianjin) Tianjin 300072 China;
School of Materials Science and Engineering Tianjin Key Laboratory of Composite and Functional Materials Tianjin University Tianjin 300350 China;
Beijing National Laboratory for Molecular Sciences State Key Laboratory of Polymer Physics and Chemistry CAS Research/Education Center for Excellence in Molecular Sciences Institute of Chemistry Chinese Academy of Sciences Beijing 100190 China;
polymer solar cells; thermal stability; morphology; miscibility; crystallization;