Multifunctional Hole Transport Strategy for Highly Efficient and Stable Inverted Perovskite Solar Cells

• DOI: 10.1021/acsami.5c01228
• Publication Date: 2025-04-08T12:57:29Z
• Authors: Wei-Min Gu; Shuchao Liu; Mingming Zhao; Jihong Zhou; Qing Wang; Xuli Li; Yan Sun; Shaojing Sun; Ke-Jian Jiang

Self-assembled monolayer (SAM)-based inverted perovskite solar cells (PSCs) have exhibited excellent performance in efficiency, while the stability and reproducibility of PSCs still need to be improved. In this work, we present a multifunctional hole transport approach for PSCs, where NiOX, SAM ((E)-3-(4-(bis(4-methoxyphenyl)amino)phenyl)acrylic acid, abbreviated as MPTCA) wetting agent (2-phenylethylamine hydroiodide, known PEAI) are employed hole-transport materials (HTMs). This NiOX/MPTCA/PEAI composite layer is uniform has good properties, which enables formation high-quality film, effectively minimizing defects that typically occur at buried interface. An outstanding champion efficiency 24.74% was obtained devices, followed by enhanced with an average power conversion (PCE) 24.13 ± 0.26%, notably higher than (22.73 0.62%) pristine MPTCA-based PSCs. More importantly, composited HTL-based devices without encapsulation demonstrated remarkable stability, decrease less 10% initial after 500 h continuous light soaking.