Synergistic Effect of RbBr Interface Modification on Highly Efficient and Stable Perovskite Solar Cells.

ABSTRACT: Compact TiO₂ films are one of the most widely used electron transport layers (ETLs) in planar perovskite solar cells (PSCs). However, the performance of the PSC device is controlled by the comprehensive qualities of the functional layers and their bilateral surfaces. In this work, the alkali metal halide of RbBr as the interfacial modifier is introduced into the interface of the TiO₂ ETL and perovskite absorber. By spin-coating the proper content of RbBr, the surface of the TiO₂ film consisting of smooth morphology and low density of oxygen-deficiency defect is readily obtained. The perovskite layer successively fabricated on the RbBr-modified TiO₂ film demonstrates large grain size, low surface roughness, and low bulk defect density, which enhan

SUBMITTER: Li D 

PROVIDER: S-EPMC8173572 | biostudies-literature | 2021 Jun

REPOSITORIES: biostudies-literature