Effective Electron Blocking of CuPC‐Doped Spiro‐OMeTAD for Highly Efficient Inorganic–Organic Hybrid Perovskite Solar Cells

The improved performance achieved by combining tert-butyl copper (II) phthalocyanine (CuPC) and po-spiro-OMeTAD as hole transporting material (HTM) for formamidinium lead iodide (FAPbI3)-based perovskite solar cells is reported. A device efficiency of 19.4% under standard 1 sun is obtained. 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.