Identifying the Optimum Morphology in High‐Performance Perovskite Solar Cells

The study of the perovskite solar cells provides insight into the optimum morphology. A bilayer structure is required for efficient solar cells, and one with a high efficiencies of up to 15.2% and an open-circuit voltage (Voc) up to 1110 mV is demonstrated. Furthermore, the 80% high yield also paves the way for the possibility of mass production in the future. 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.