A New Polythiophene Derivative for High Efficiency Polymer Solar Cells with PCE over 9%

A new fluorinated polythiophene (PT) derivative, PBDD-ff4T, is designed and synthesized. The PBDD-ff4T/PC71BM-based device without any extra treatment exhibits a high efficiency of 9.2%, under the irradiation of AM 1.5G, 100 mW cm−2, which is the highest power conversion efficiency reported for PT derivative-based polymer solar cells. As a service to our authors and readers, this journal provides supporting information supplied by the authors. Such materials are peer reviewed and may be re-organized for online delivery, but are not copy-edited or typeset. Technical support issues arising from supporting information (other than missing files) should be addressed to the authors. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.