High Polymer/Fullerene Ratio Realized in Efficient Polymer Solar Cells by Tailoring of the Polymer Side‐Chains

The introduction of “double aromatic side-chains” to the existing polymer backbone is an effective approach to obtain high performance polymer solar cells with low fullerene and additive concentrations, leading to improved absorbance for thin film and more environment-friendly processing. 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.