Yang Liyan, Li Xiaofang, Li Mufang, Liu Dan, Wang Dong, Wang Tao
Key Laboratory of Textile Fiber and Products (Wuhan Textile University), Ministry of Education, Wuhan, 430200, China.
School of Materials Science and Engineering, Wuhan University of Technology, Wuhan, 430070, China.
Small. 2025 Feb;21(7):e2410731. doi: 10.1002/smll.202410731. Epub 2025 Jan 2.
2D perovskite has demonstrated great potential for application in photovoltaic devices due to the tunable energy bands, suppressed ion migration, and high stability. However, 2D perovskite solar cells (PSCs) display suboptimal efficiency in comparison to 3D perovskite solar cells, which can be attributed to the quantum confinement and dielectric confinement effects resulting from the intercalation of organic spacer cations into the perovskite lattice. This review starts with the fundamental structural characteristics, optoelectronic properties, and carrier transport dynamics of 2D PSCs, followed by the discussion of approaches to improve the photovoltaic performance of 2D PSCs, including the manipulation of crystal orientation, phase distribution, pure phase, organic layer, and device engineering. Then the advancements in the structural, humidity, thermal, and maximum power point tracking stability of 2D PSCs are summarized. Afterward, the applications of 2D perovskite in 2/3D PSCs to improve efficiency and stability are discussed. This review provides a comprehensive understanding of the relationship between 2D perovskite structure and the performance of the resulting 2D PSCs, as well as offers insights for constructing efficient and stable 2/3D PSCs by integrating 2D and 3D perovskites.
二维钙钛矿由于其可调节的能带、抑制的离子迁移和高稳定性，在光伏器件中展现出了巨大的应用潜力。然而，与三维钙钛矿太阳能电池相比，二维钙钛矿太阳能电池（PSCs）的效率并不理想，这可归因于有机间隔阳离子插入钙钛矿晶格所导致的量子限制和介电限制效应。本综述首先介绍二维PSCs的基本结构特征、光电特性和载流子传输动力学，接着讨论提高二维PSCs光伏性能的方法，包括晶体取向、相分布、纯相、有机层和器件工程的调控。然后总结二维PSCs在结构、湿度、热稳定性和最大功率点跟踪稳定性方面的进展。随后，探讨二维钙钛矿在2/3D PSCs中用于提高效率和稳定性的应用。本综述全面阐述了二维钙钛矿结构与所得二维PSCs性能之间的关系，同时为通过整合二维和三维钙钛矿构建高效稳定的2/3D PSCs提供了见解。
