Planar CH3NH3PbBr3 Hybrid Solar Cells with 10.4% Power Conversion Efficiency, Fabricated by Controlled Crystallization in the Spin‐Coating Process

A power conversion efficiency of 10.4% is demonstrated in planar CH3NH3PbBr3 hybrid solar cells without hysteresis of the J–V curve, by way of controlled crystallization in the spin-coating process. The high efficiency is attributed to the formation of a dense CH3NH3PbBr3 thin film by the introduction of HBr solution because the HBr increases the solubility of the CH3NH3PbBr3 and forms a thinner CH3NH3PbBr3 layer with full surface coverage. 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.