Templated growth of phase-pure two-dimensional perovskite for durable solar cells

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ID: 327597
2026
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Abstract
Abstract The impure phase in typical solution-processed two-dimensional/three-dimensional (2D/3D) perovskite heterostructures limit the performance and stability of perovskite solar cells. We overcome this limitation through a templated growth strategy utilizing excess lead iodide, which directs the formation of robust phase-pure 2D perovskite at the 3D perovskite surface. This strategy effectively suppresses phase segregation and ion interdiffusion at the 2D/3D perovskite interface, while promoting favorable energy alignment for charge extraction. The resulting 2D/3D devices achieved 26.8% efficiency (26.5% certified) and improved durability, retaining over 95% of their initial performance after 3000 h of continuous operation and maintaining nearly 100% of their initial performance throughout 90 days of outdoor testing, showcasing promising real-world stability.
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openalex_W7208724964 Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Xiangnan Sun, Peng Xu, Xitao Li, Xinyu Zhao, Xinzhu Li, Jinping Zhang, Jinzhan Cheng, Wenda Shi, Zhenhu Zhang, Wei Zhang, Tianjun Liu, Wanlin Guo, Xiaoming Zhao
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Journal national science review
Year 2026
DOI
10.1093/nsr/nwag574
URL
https://doi.org/10.1093/nsr/nwag574
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