Passivation agent with dipole moment for surface modification towards efficient and stable perovskite solar cells

作     者：Ge Wang Chen Wang Yajun Gao Shanpeng Wen Roderick C.I.MacKenzie Liuxing Guo Wei Dong Shengping Ruan Ge Wang;Chen Wang;Yajun Gao;Shanpeng Wen;Roderick C.I.MacKenzie;Liuxing Guo;Wei Dong;Shengping Ruan

作者机构：College of Electronic Science&EngineeringJilin UniversityChangchun 130012JilinChina State Key Laboratory on Integrated OptoelectronicsJilin UniversityChangchun 130012JilinChina State Key Laboratory of Supramolecular Structure and MaterialsCollege of ChemistryJilin UniversityChangchun 130012JilinChina KAUST Solar Center(KSC)Physical Sciences and Engineering Division(PSE)King Abdullah University of Science and Technology(KAUST)Thuwal 23955-6900Saudi Arabia Faculty of EngineeringThe University of NottinghamUniversity ParkNottingham NG72RDUnited Kingdom 

出 版 物：《Journal of Energy Chemistry》 (能源化学（英文版）)

年 卷 期：2022年第31卷第1期

页      面：55-61,I0003页

核心收录：

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

基　　金：supported by the National Natural Science Foundation of China(Grant Nos.52073115,61874048,12073009) the Project of Science and Technology Development Plan of Jilin Province(Grant No.20200201085JC) 

主　　题：4-Chlorobenzoic acid Interface engineering Passivation Surface dipole Perovskite solar cells 

摘      要：Recently,there has been renewed interest in interface engineering as a means to further push the performance of perovskite solar cells closer to the Schockly-Queisser ***,for the first time we employ a multi-functional 4-chlorobenzoic acid to produce a self-assembled monolayer on a perovskite *** this interlayer we observe passivation of perovskite surface defects and a significant suppression of non-radiative charge ***,at the surface of the interlayer we observe,charge dipoles which tune the energy level alignment,enabling a larger energetic driving force for hole *** perovskite surface becomes more hydrophilic due to the presence of the ***,we observe an improvement in open-circuit voltage from 1.08 to 1.16 V,a power conversion efficiency improvement from 18%to 21%and an improved stability under ambient *** work highlights the potential of SAMs to engineer the photo-electronic properties and stability of perovskite interfaces to achieve high-performance light harvesting devices.