Adhesively Bridging Co-Self-Assembled Monolayer and Perovskite Via In Situ Polymerization for Enhanced Stability of Inverted Perovskite Solar Cells

作     者：Xu, Xiaowei Li, Sibo Shan, Chengwei Peng, Wenbo Chen, You Li, Shangzhi Peng, Haichen Dai, Tingting Zhou, Erjun Bai, Yang Qiu, Longbin Sun, Pingping Xu, Baomin Kyaw, Aung Ko Ko 

作者机构：Southern Univ Sci & Technol Dept Elect & Elect Engn Shenzhen 518055 Peoples R China Southern Univ Sci & Technol SUSTech Energy Inst Carbon Neutral Dept Mech & Energy Engn Shenzhen Key Lab Intelligent Robot & Flexible Mfg Shenzhen 518055 Peoples R China Southern Univ Sci & Technol Dept Mat Sci & Engn Shenzhen 518055 Guangdong Peoples R China Chinese Acad Sci Shenzhen Inst Adv Technol Inst Technol Carbon Neutral Shenzhen 518055 Peoples R China Huazhong Univ Sci & Technol Michael Gratzel Ctr Mesoscop Solar Cells Wuhan Natl Lab Optoelect Wuhan 430074 Hubei Peoples R China Jiaxing Univ Coll Biol Chem Sci & Engn Jiaxing 314001 Zhejiang Peoples R China Hainan Univ Sch Chem & Chem Engn Haikou 570228 Peoples R China 

出 版 物：《ADVANCED MATERIALS》 (Adv Mater)

年 卷 期：2025年

页      面：e2505745页

核心收录：

学科分类：08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 0703[理学-化学] 0702[理学-物理学] 

基　　金：National Natural Science Foundation of China Shenzhen Science and Technology Innovation Commission [JCYJ20240813095002003, JCYJ20220530113014033] SUSTech Core Research Facilities 22203024 

主　　题：adhesion Co-SAMs in situ polymerization inverted planar perovskite solar cells long-term stability 

摘      要：The strategic utilization of self-assembled monolayers (SAMs) significantly advances the interfacial contact and power conversion efficiency (PCE) of inverted perovskite solar cells (IPSCs). However, inadequate adhesion between the SAM and perovskite layer remains a critical challenge, limiting further performance enhancement. Herein, a synergistic interface engineering strategy is introduced that combines a co-assembly approach with in situ polymerization to optimize the buried interface of perovskite film. Specifically, 11-Mercaptoundecylphosphoric acid (MPA) is incorporated into a SAM to form co-SAMs, improving homogeneity and mitigating defects at the NiOx surface. Simultaneously, the ionic liquid (IL) monomer 1-Allyl-3-vinylimidazolium bis((trifluoromethyl)sulfonyl) imide (AVMTF2) is incorporated into the perovskite precursor. The aggregation of ILs cation at the bottom interface facilitates in situ polymerization via sulfhydryl end groups, forming the POL-AVM polymer at the perovskite/SAM interface. This polymer enhances interfacial adhesion, regulates perovskite crystallization, and reinforces structural integrity by strongly anchoring organic cations through multiple hydrogen bonds. As a result, this synergistic strategy achieves a champion PCE of 26.25% (certified 26.04%), along with excellent long-term stability, retaining 95.6% of its initial efficiency after 1000 h of continuous operation under the ISOS-L-2I protocol.