MDA2+调控二维/三维杂化结构实现高效稳定室内宽带隙钙钛矿太阳能电池

Abstract Wide band gap perovskite solar cells demonstrate significant potential for indoor photovoltaic applications yet their performance and stability still face challenges.The two-dimensional/three-dimensional (2D/3D) hybrid perovskite approach is regarded as an effective strategy to enhance the overall performance of wide bandgap perovskite devices.This study introduces a 2D/3D hybridperovskite structure based on methylenediammonium ions (MDA 2+ ) aiming to improve the photovoltaic performance of wide-bandgap perovskites under indoor lighting conditions.The research reveals that MDA 2+ can interact with lead ions iodide ions and bromide ions in the perovskite precursor solution inducing the formation of quasi-2D perovskite phases and thereby constructing a 2D/3D hybrid perovskite system.Compared to conventional 3D perovskites this hybrid structure effectively optimizes the crystallization