The Effect of Component Defects on the Performance of Perovskite Devices and the Low-Cost Preparation of High-Purity PbI₂.

ABSTRACT: The efficiency and reproducibility of perovskite solar cells (PSCs) are significantly influenced by the purity of lead iodide (PbI₂) in the raw materials used. Pb(OH)I has been identified as the primary impurity generated from PbI₂ in water-based synthesis. Consequently, a comprehensive investigation into the impact of Pb(OH)I impurities on film and device performance is essential. In this study, PbI₂, with varying stoichiometries, was synthesized to examine the effects of different Pb(OH)I levels on perovskite device performance. The characterization results revealed that even trace amounts of Pb(OH)I impede the formation of precursor prenucleation clusters. These impurities also increase the energy barrier of the α-phase and facilitate the transition of t

SUBMITTER: Dong B 

PROVIDER: S-EPMC11357023 | biostudies-literature | 2024 Aug

REPOSITORIES: biostudies-literature