题目：

Aniline Sulfonic Acid Induced Uniform Perovskite Film for Large-Scale Photovoltaics

作者：

Kai-li Wang¹, Meng Li², Yan-Hui Lou³, Jing Chen¹, Yi-Ran Shi¹, Chun-Hao Chen¹, Yu-Hang Zhou¹, Zhao-Kui Wang¹*, and Liang-Sheng Liao¹

单位：

¹Institute of Functional Nano and Soft Materials (FUNSOM), Soochow University, Suzhou, China.

²Key Lab for Special Functional Materials, Ministry of Education, School of Materials Science and Engineering and Collaborative Innovation Center of Nano Functional Materials and Applications, Henan University Kaifeng 475004, China

³College of Energy, Soochow Institute for Energy and Materials Innovations, Soochow University Suzhou 215006, China

摘要：

Unreacted/excess lead iodide is considered to be the archcriminal for the rapid degradation of hybrid perovskite solar cells. Meanwhile, a high-quality perovskite film with uniform and large grain size is the basis for high-performance perovskite modules. Herein, a dual-site molecular additive 4-Aniline Sulfonic Acid (4A) is developed to regulate the unreacted/excess PbI2 and passivate defects through hydrogen bonding and intermolecular interactions between amino, and a sulfate groups and PbI₂, respectively. Furthermore, the introduction of the 4A additive can induce perovskite seeds to grow uniformly on the substrate, yielding dense, uniform and defect-less perovskite films with large grain sizes. This enables the fabrication of perovskite photovoltaics with a maximum power conversion efficiency of 24.09% (0.09 cm²) and 20.87% (16 cm²), respectively. This work demonstrated a new strategy to deposit high-quality large-scale perovskite films for photovoltaic modules.

影响因子：

29.698

分区情况：

一区

链接：

https://doi.org/10.1002/aenm.202203471