A 2D/3D Heterostructure Perovskite Solar Cell with a Phase-Pure and Pristine 2D Layer.

ABSTRACT: Interface engineering plays a critical role in advancing the performance of perovskite solar cells. As such, 2D/3D perovskite heterostructures are of particular interest due to their optoelectrical properties and their further potential improvements. However, for conventional solution-processed 2D perovskites grown on an underlying 3D perovskite, the reaction stoichiometry is normally unbalanced with excess precursors. Moreover, the formed 2D perovskite is impure, leading to unfavorable energy band alignment at the interface. Here a simple method is presented that solves both issues simultaneously. The 2D formation reaction is taken first to completion, fully consuming excess PbI₂. Then, isopropanol is utilized to remove excess organic ligands, control the 2D perovskite thicknes

SUBMITTER: Shih MC 

PROVIDER: S-EPMC12038532 | biostudies-literature | 2025 Apr

REPOSITORIES: biostudies-literature