Spontaneous formation of robust two-dimensional perovskite phases

IF 45.8 1区综合性期刊 Q1 MULTIDISCIPLINARY SCIENCES

Science Pub Date : 2025-05-08

Shaun Tan, Meng-Chen Shih, Yongli Lu, Seung-Gu Choi, Yifan Dong, Joo-Hong Lee, Ilhan Yavuz, Bryon W. Larson, So Yeon Park, Tim Kodalle, Ruiqi Zhang, Matthias J. Grotevent, Yu-Kuan Lin, Hua Zhu, Vladimir Bulović, Carolin M. Sutter-Fella, Nam-Gyu Park, Matthew C. Beard, Jin-Wook Lee, Kai Zhu, Moungi G. Bawendi

引用次数: 0

Abstract

The two-dimensional on three-dimensional (2D/3D) perovskite bilayer heterostructure can improve the stability and performance of perovskite solar cells. We show that the 2D/3D perovskite stack in a device evolves dynamically during its end-of-life decomposition. Initially phase-pure 2D interlayers can evolve differently, resulting in different device stabilities. We show that a robust 2D interlayer can be formed using mixed solvents to regulate its crystallinity and phase purity. The resulting 2D/3D devices achieved 25.9% efficiency and had good durability, retaining 91% of their initial performance after 1074 hours at 85°C using maximum power point tracking.

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强健的二维钙钛矿相的自发形成

二维对三维（2D/3D）钙钛矿双层异质结构可以提高钙钛矿太阳能电池的稳定性和性能。我们表明，器件中的2D/3D钙钛矿堆栈在其寿命结束分解期间动态演变。最初纯相位2D中间层可以演变不同，导致不同的设备稳定性。我们表明，使用混合溶剂可以形成坚固的二维中间层，以调节其结晶度和相纯度。由此产生的2D/3D器件达到了25.9%的效率，并且具有良好的耐用性，在85°C下使用最大功率点跟踪1074小时后保持了91%的初始性能。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Science 综合性期刊-综合性期刊

CiteScore

61.10

自引率

0.90%

发文量

审稿时长

2.1 months

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