Regulating the crystalline phase of intermediate films enables FA<sub>1−<i>x</i></sub>MA<sub><i>x</i></sub>PbI<sub>3</sub> perovskite solar cells with efficiency over 22%
Fazheng Qiu, Minghua Li, Shuo Wang, Jiayi Sun, Yan Jiang, Junjie Qi, Jin‐Song Hu
Abstract
FA 1− x MA x PbI 3 perovskite films prepared from δ phase intermediate films exhibited preferable orientation, high crystallinity, low trap density and strong light absorption. The corresponding planar PSCs achieved a champion efficiency of 22.09%.
Topics & Concepts
CrystallinityPerovskite (structure)Materials sciencePhase (matter)Absorption (acoustics)CrystallographyChemistryComposite materialOrganic chemistryPerovskite Materials and ApplicationsQuantum Dots Synthesis And PropertiesChalcogenide Semiconductor Thin Films