Dual Passivation of Perovskite and SnO₂ for High-Efficiency MAPbI₃ Perovskite Solar Cells.

ABSTRACT: So far, most techniques for modifying perovskite solar cells (PSCs) focus on either the perovskite or electron transport layer (ETL). For the sake of comprehensively improving device performance, a dual-functional method of simultaneously passivating trap defects in both the perovskite and ETL films is proposed that utilizes guidable transfer of Eu³⁺ in SnO₂ to perovskite. Europium ions are distributed throughout the SnO₂ film during the formation process of SnO₂, and they can diffuse directionally through the SnO₂/perovskite interface into the perovskite, while most of the europium ions remain at the interface. Under the synergistic effect of distributed Eu³⁺ in the SnO₂ and aggregated Eu³⁺ at the inte

SUBMITTER: Chen Y 

PROVIDER: S-EPMC7927604 | biostudies-literature | 2021 Mar

REPOSITORIES: biostudies-literature