碘插层非合金α-相甲脒型三碘化铅太阳能电池

IF 45.8 1区 综合性期刊 Q1 MULTIDISCIPLINARY SCIENCES
Science Pub Date : 2025-01-16 DOI:10.1126/science.ads8968
Yu Zhang, Yanrun Chen, Guilin Liu, Yuetong Wu, Zhenyu Guo, Rundong Fan, Kailin Li, Huifen Liu, Yepin Zhao, Tim Kodalle, Yihua Chen, Cheng Zhu, Yang Bai, Qi Chen, Huanping Zhou
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引用次数: 0

摘要

甲脒三碘化铅(FAPbI 3 )被认为是高性能单结太阳能电池最有前途的成分。然而,非合金化的 α-FAPbI 3 与光活性的 δ 相相比是易变的。我们开发了一种动力学调控策略,在共生挥发性碘插层和脱盐的辅助下,制造出高质量和稳定的非合金化 α-FAPbI 3 薄膜。碘的插层促进了角共享 Pb-I 框架构件的形成,降低了 α-FAPbI 3 形成的动力学障碍,而碘的脱盐则从成分纯度和整体均匀性方面提高了最终包晶体薄膜的质量。基于这种非合金化 α-FAPbI 3(不含其他外在成分离子)的太阳能电池实现了 24% 的功率转换效率。这些器件还表现出卓越的耐久性,在 85° ± 5°C 的照明条件下工作超过 1100 小时后,仍能保持 99% 的原始功率转换效率。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Nonalloyed α-phase formamidinium lead triiodide solar cells through iodine intercalation
Formamidinium lead triiodide (FAPbI3) is considered the most promising composition for high-performing single-junction solar cells. However, nonalloyed α-FAPbI3 is metastable with respect to the photoinactive δ-phase. We have developed a kinetic modulation strategy to fabricate high-quality and stable nonalloyed α-FAPbI3 films, assisted by cogenetic volatile iodine intercalation and decalation. The intercalation of iodine facilitated the formation of corner-sharing Pb-I framework building blocks and reduced the kinetic barrier for α-FAPbI3 formation, whereas the iodine decalation improved the final perovskite film quality in terms of composition purity and overall homogeneity. Solar cells based on this nonalloyed α-FAPbI3 (free of other extrinsic composition ions) achieved a power conversion efficiency of >24%. The devices also exhibited excellent durability, retaining 99% of their original power conversion efficiency after operating for more than 1100 hours at 85° ± 5°C under illumination.
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来源期刊
Science
Science 综合性期刊-综合性期刊
CiteScore
61.10
自引率
0.90%
发文量
0
审稿时长
2.1 months
期刊介绍: Science is a leading outlet for scientific news, commentary, and cutting-edge research. Through its print and online incarnations, Science reaches an estimated worldwide readership of more than one million. Science’s authorship is global too, and its articles consistently rank among the world's most cited research. Science serves as a forum for discussion of important issues related to the advancement of science by publishing material on which a consensus has been reached as well as including the presentation of minority or conflicting points of view. Accordingly, all articles published in Science—including editorials, news and comment, and book reviews—are signed and reflect the individual views of the authors and not official points of view adopted by AAAS or the institutions with which the authors are affiliated. Science seeks to publish those papers that are most influential in their fields or across fields and that will significantly advance scientific understanding. Selected papers should present novel and broadly important data, syntheses, or concepts. They should merit recognition by the wider scientific community and general public provided by publication in Science, beyond that provided by specialty journals. Science welcomes submissions from all fields of science and from any source. The editors are committed to the prompt evaluation and publication of submitted papers while upholding high standards that support reproducibility of published research. Science is published weekly; selected papers are published online ahead of print.
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