Stabilization of Inorganic Perovskite Solar Cells with a 2D Dion-Jacobson Passivating Layer

作     者：Wu, Luyan Li, Guixiang Prashanthan, Karunanantharajah Musiienko, Artem Li, Jinzhao Gries, Thomas W. Zhang, Hao Koebler, Hans Janasik, Patryk Appiah, Augustine N. S. Paramasivam, Gopinath Sun, Tianxiao Li, Meng Marongiu, Daniela Saba, Michele Abate, Antonio 

作者机构：Univ Cagliari Dipartimento Fis I-09042 Monserrato CA Italy Helmholtz Zentrum Berlin Materialien & Energie Hahn-Meitner-Pl 1 D-14109 Berlin Germany Ecole Polytech Fed Lausanne EPFL Inst Chem Sci & Engn CH-1015 Lausanne Switzerland Univ Bielefeld Dept Chem Univ Str 25 D-33615 Bielefeld Germany Univ Jaffna Dept Phys Jaffna 40000 Sri Lanka Univ Bordeaux Lab Ondes & Matiere Aquitaine F-33405 Talence France CNRS F-33405 Talence France Silesian Tech Univ Dept Chem Strzody 9 PL-44100 Gliwice Poland Henan Univ Natl & Local Joint Engn Res Ctr Highefficiency Di Collaborat Innovat Ctr Nanofunctional Mat & Appli Key Lab Special Functional Mat Minist Educ Sch M Kaifeng 475004 Peoples R China 

出 版 物：《ADVANCED MATERIALS》 (先进材料)

年 卷 期：2023年第35卷第42期

页      面：2304150-2304150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：Open access funding enabled and organized by Projekt DEAL 

主　　题：2D/3D heterostructure Dion-Jacobson phase humidity stability inorganic perovskite solar cells 

摘      要：Inorganic metal halide perovskites such as CsPbI3 are promising for high-performance, reproducible, and robust solar cells. However, inorganic perovskites are sensitive to humidity, which causes the transformation from the black phase to the yellow , non-perovskite phase. Such phase instability has been a significant challenge to long-term operational stability. Here, a surface dimensionality reduction strategy is reported, using 2-(4-aminophenyl)ethylamine cation to construct a Dion-Jacobson 2D phase that covers the surface of the 3D inorganic perovskite structure. The Dion-Jacobson layer mainly grows at the grain boundaries of the perovskite, effectively passivating surface defects and providing favourable interfacial charge transfer. The resulting inorganic perovskite films exhibit excellent humidity resistance when submerged in an aqueous solution (isopropanol:water = 4:1 v/v) and exposed to a 50% humidity air atmosphere. The Dion-Jacobson 2D/3D inorganic perovskite solar cell (PSC) achieves a power conversion efficiency (PCE) of 19.5% with a Voc of 1.197 eV. It retains 83% of its initial PCE after 1260 h of maximum power point tracking under 1.2 sun illumination. The work demonstrates an effective way for stabilizing efficient inorganic perovskite solar cells. CsPbI3 perovskites suffers fast transfer to non-perovskite phase, especially exposed to humidity. Using 2-(4-aminophenyl)ethylamine cation to construct a Dion-Jacobson 2D phase that covers the 3D inorganic perovskite surface, the obtained 2D/3D perovskite films exhibit excellent humidity resistance and higher temperature stability, resulting in improved efficiency and operational stability in solar ***