The Crucial Role of Chlorinated Thiophene Orientation in Conjugated Polymers for Photovoltaic Devices
Yanan Wu
Beijing National Laboratory for Molecular Science, CAS Key State Key Laboratory of Polymer Physics and Chemistry, Institute of Chemistry, Chinese Academy of Science, Beijing, 100190 P. R. China
Search for more papers by this authorCorresponding Author
Dr. Cunbin An
Beijing National Laboratory for Molecular Science, CAS Key State Key Laboratory of Polymer Physics and Chemistry, Institute of Chemistry, Chinese Academy of Science, Beijing, 100190 P. R. China
Search for more papers by this authorLanlan Shi
Beijing National Laboratory for Molecular Science, CAS Key State Key Laboratory of Polymer Physics and Chemistry, Institute of Chemistry, Chinese Academy of Science, Beijing, 100190 P. R. China
Search for more papers by this authorLiyan Yang
Beijing National Laboratory for Molecular Science, CAS Key State Key Laboratory of Polymer Physics and Chemistry, Institute of Chemistry, Chinese Academy of Science, Beijing, 100190 P. R. China
University of Chinese Academy of Sciences, Beijing, 100049 P. R. China
Search for more papers by this authorYunpeng Qin
Beijing National Laboratory for Molecular Science, CAS Key State Key Laboratory of Polymer Physics and Chemistry, Institute of Chemistry, Chinese Academy of Science, Beijing, 100190 P. R. China
Search for more papers by this authorDr. Ningning Liang
Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Science, Beijing, 100190 P. R. China
Search for more papers by this authorDr. Chang He
Beijing National Laboratory for Molecular Science, CAS Key State Key Laboratory of Polymer Physics and Chemistry, Institute of Chemistry, Chinese Academy of Science, Beijing, 100190 P. R. China
Search for more papers by this authorProf. Zhaohui Wang
Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Science, Beijing, 100190 P. R. China
University of Chinese Academy of Sciences, Beijing, 100049 P. R. China
Search for more papers by this authorCorresponding Author
Prof. Jianhui Hou
Beijing National Laboratory for Molecular Science, CAS Key State Key Laboratory of Polymer Physics and Chemistry, Institute of Chemistry, Chinese Academy of Science, Beijing, 100190 P. R. China
University of Chinese Academy of Sciences, Beijing, 100049 P. R. China
Search for more papers by this authorYanan Wu
Beijing National Laboratory for Molecular Science, CAS Key State Key Laboratory of Polymer Physics and Chemistry, Institute of Chemistry, Chinese Academy of Science, Beijing, 100190 P. R. China
Search for more papers by this authorCorresponding Author
Dr. Cunbin An
Beijing National Laboratory for Molecular Science, CAS Key State Key Laboratory of Polymer Physics and Chemistry, Institute of Chemistry, Chinese Academy of Science, Beijing, 100190 P. R. China
Search for more papers by this authorLanlan Shi
Beijing National Laboratory for Molecular Science, CAS Key State Key Laboratory of Polymer Physics and Chemistry, Institute of Chemistry, Chinese Academy of Science, Beijing, 100190 P. R. China
Search for more papers by this authorLiyan Yang
Beijing National Laboratory for Molecular Science, CAS Key State Key Laboratory of Polymer Physics and Chemistry, Institute of Chemistry, Chinese Academy of Science, Beijing, 100190 P. R. China
University of Chinese Academy of Sciences, Beijing, 100049 P. R. China
Search for more papers by this authorYunpeng Qin
Beijing National Laboratory for Molecular Science, CAS Key State Key Laboratory of Polymer Physics and Chemistry, Institute of Chemistry, Chinese Academy of Science, Beijing, 100190 P. R. China
Search for more papers by this authorDr. Ningning Liang
Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Science, Beijing, 100190 P. R. China
Search for more papers by this authorDr. Chang He
Beijing National Laboratory for Molecular Science, CAS Key State Key Laboratory of Polymer Physics and Chemistry, Institute of Chemistry, Chinese Academy of Science, Beijing, 100190 P. R. China
Search for more papers by this authorProf. Zhaohui Wang
Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Science, Beijing, 100190 P. R. China
University of Chinese Academy of Sciences, Beijing, 100049 P. R. China
Search for more papers by this authorCorresponding Author
Prof. Jianhui Hou
Beijing National Laboratory for Molecular Science, CAS Key State Key Laboratory of Polymer Physics and Chemistry, Institute of Chemistry, Chinese Academy of Science, Beijing, 100190 P. R. China
University of Chinese Academy of Sciences, Beijing, 100049 P. R. China
Search for more papers by this authorGraphical Abstract
Two chlorinated polymers were designed and synthesized. They exhibited significantly different optical, electrochemical, organizational, and photovoltaic properties.
Abstract
Chlorinated conjugated polymers not only show great potential for the realization of highly efficient polymer solar cells (PSCs) but also have simple and high-yield synthetic routes and low-cost raw materials available for their preparation. However, the study of the structure–property relationship of chlorinated polymers is lagging. Now two chlorinated conjugated polymers, PCl(3)BDB-T and PCl(4)BDB-T are investigated. When the polymers were used to fabricate PSCs with the nonfullerene acceptor (IT-4F), surprisingly, the PCl(3)BDB-T:IT-4F-based device exhibited a negligible power conversion efficiency (PCE) of 0.18 %, while the PCl(4)BDB-T:IT-4F-based device showed an outstanding PCE of 12.33 %. These results provide new insight for the rational design and synthesis of novel chlorinated polymer donors for further improving the photovoltaic efficiencies of PSCs.
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