A supramolecular approach to improve the performance and operational stability of all-perovskite tandem solar cells.

IF 15.7 1区综合性期刊 Q1 MULTIDISCIPLINARY SCIENCES

Nature Communications Pub Date : 2025-08-04 DOI:10.1038/s41467-025-62391-9

Xinxin Lian,Mingjing Jin,Weideren Dai,Yuanjiang Lv,Ming Luo,Ying Hu,Zhijie Wang,Haiyun Li,Chunyu Xu,Dongrui Jiang,Hao Min,Yifan Chen,Jin Chang,Tzu-Sen Su,Fei Ma,Yang Bai,Hong Zhang,Xiaoliang Mo,Junhao Chu

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Abstract

Wide-bandgap perovskite is pivotal as a photoactive layer in the top cell of prevailing tandem solar cells. However, the intrinsic instability of wide-bandgap perovskite solar cells is predominantly attributed to the vacancy defects caused by multiple ion migration. Here, we incorporate an ether ring super-molecule into perovskite. This supramolecular approach effectively manipulates the crystallization kinetics and suppresses the halide segregation under illumination by tuning the coordination of halides toward monovalent cations and lead ions. As a result, the supramolecular engineered 1.77 eV perovskite solar cells achieve a champion power conversion efficiency of 21.01% with an outstanding operational stability, retaining 95% of initial efficiency after 1000 h σof maximum-power-point tracking test. Meanwhile, the two-terminal all-perovskite tandem solar cells achieve the champion efficiency of 28.44% (certified 27.92%). This work paves an avenue to improve the film quality and illumination stability of mixed halide wide-bandgap perovskites with a supramolecular approach.

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一种提高全钙钛矿串联太阳能电池性能和运行稳定性的超分子方法。

宽禁带钙钛矿是目前流行的串联太阳能电池的光活性层。然而，宽禁带钙钛矿太阳能电池的固有不稳定性主要归因于多离子迁移引起的空位缺陷。在这里，我们将醚环超级分子加入到钙钛矿中。这种超分子方法通过调整卤化物与单价阳离子和铅离子的配位，有效地控制了结晶动力学，抑制了光照下卤化物的偏析。结果表明，超分子工程的1.77 eV钙钛矿太阳能电池的功率转换效率达到了21.01%，并具有良好的运行稳定性，在1000 h σ最大功率点跟踪测试后仍保持95%的初始效率。同时，双端全钙钛矿串联太阳能电池获得了28.44%的冠军效率（认证为27.92%）。本研究为利用超分子方法改善混合卤化物宽禁带钙钛矿的薄膜质量和照明稳定性铺平了道路。

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

Nature Communications Biological Science Disciplines-

CiteScore

24.90

自引率

2.40%

发文量

6928

审稿时长

3.7 months

期刊介绍： Nature Communications, an open-access journal, publishes high-quality research spanning all areas of the natural sciences. Papers featured in the journal showcase significant advances relevant to specialists in each respective field. With a 2-year impact factor of 16.6 (2022) and a median time of 8 days from submission to the first editorial decision, Nature Communications is committed to rapid dissemination of research findings. As a multidisciplinary journal, it welcomes contributions from biological, health, physical, chemical, Earth, social, mathematical, applied, and engineering sciences, aiming to highlight important breakthroughs within each domain.