A Novel Method to Control the Crystallographic‐Preferred Orientation of Lead Iodide Toward Highly Efficient and Large‐Area Perovskite Solar Cells

Abstract

Perovskite Films In article number http://doi.wiley.com/10.1002/solr.202200609, Pei‐Ting Chiu and co‐workers found that the proportion of the facet (001) of PbI2 crystals increases as the synthesis temperature increases and fabricates better formamidinium‐based perovskite films. The perovskite solar cells based on the PbI2 synthesized at 120 °C exhibit the best power conversion efficiency (PCE) of 17.96% and the module with an active area of 3.68 cm2 shows a PCE of 16.08%.