作者：

Yanbo Wang^1,2, Yitong Liu¹, Yi Ji¹*, Gaoyuan Yang³, Xin Li¹, Xueqi Wu¹, Yige Peng¹, Hailong Huang^1,2, Zewu Feng^1,2, Yansen Guo^1,2, Huanyu Zhang¹, Chenghao Ge¹, Shuilong Kang¹, Yang Zhang¹, Yurou Zhang², Chaopeng Huang², Xinhai Zhao², Jingsong Sun², Youyong Li¹, Xiao-Hong Zhang⁴*, Jun Peng^1,2*

单位：

¹State Key Laboratory of Bioinspired Interfacial Materials Science, Institute of Functional Nano & Soft Materials (FUNSOM), Soochow University, Suzhou, China

²Zhejiang Baima Lake Laboratory Co., Ltd, Hangzhou, Zhejiang, China

³Hubei Longzhong Laboratory, Hubei University of Arts and Science, Xiangyang, Hubei, China

⁴Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory of Advanced Negative Carbon Technologies, Soochow University, Suzhou, China

摘要：

The performance of inverted perovskite solar cells (PSCs) is often impeded by severe non-radiative recombination and carrier transport losses at the self-assembled monolayer (SAM)/perovskite interface, arising from inhomogeneous SAM distribution and weak interfacial bonding with the perovskite layer. To address these challenges, we introduce a universal synergistic interface engineering strategy employing 2-aminopyrimidine-4-carboxylic acid (m-APCA), a meta-substituted molecule featuring asymmetric bifunctional groups on its pyrimidine ring. These groups induce substantial molecular polarization, amplifying the dipole moment and reinforcing intermolecular π–π interactions with SAMs, thereby mitigating SAM aggregation and ensuring uniform substrate coverage. Concurrently, the strong dipole field and bifunctional chemistry of m-APCA enable robust chemical bonding with the perovskite layer, acting as nucleation sites that regulate grain growth and passivate buried interfacial defects. This dual-action approach reduces interfacial energy barriers and enhances hole transport efficiency, achieving very high efficiencies of 26.77% (certified at 26.71%), 26.08%, and 24.17% for small-area (normal bandgap), centimeter-scale (normal bandgap), and wide-bandgap PSCs, respectively. Notably, optimized PSCs demonstrate exceptional operational stability, retaining 96% of initial efficiency after 1200 h of continuous maximum power point tracking.

影响因子：

26.8

分区情况：

一区

链接：

https://doi.org/10.1002/adma.73306