Origin of High Electronic Quality in Structurally Disordered CH3NH3PbI3 and the Passivation Effect of Cl and O at Grain Boundaries

The organic–inorganic hybrid perovskite CH3NH3PbI3 exhibits more structural disorder but more electronic order compared to inorganic CdTe. The grain boundaries of CH3NH3PbI3 could induce defect levels around the VBM and thus increase hole effective mass. Cl and O are found to be able to spontaneously segregate into the GBs, passivate the defect state, and improve carrier transportation. 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.