钙钛矿太阳能电池的热稳定蒽基2D/3D异质结构

IF 8.2 2区 材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY
Kathryn Bairley, Junxiang Zhang, Damara G. Dayton, Courtney Brea, Pattarawadee Therdkatanyuphong, Stephen Barlow, Guoxiang Hu, Michael F. Toney, Seth R. Marder, Carlo A. R. Perini, Juan-Pablo Correa-Baena
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引用次数: 0

摘要

大块的有机阳离子用于钙钛矿太阳能电池中,作为防止水分、氧气和离子扩散的保护屏障。然而,体积较大的阳离子会通过与3D钙钛矿近表面反应形成低维相(包括2D钙钛矿),并从表面扩散到薄膜中,从而引入热不稳定性。本研究探讨了两种蒽盐──蒽-1-基甲基碘化铵(AMAI)和2-(蒽-1-基)乙基碘化铵(AEAI)──处理Cs0.09FA0.91PbI3 3D钙钛矿表面的热稳定性,并与广泛使用的苯乙基碘化铵(PEAI)进行了比较。相对于AEAI和PEAI, AMAI的空间位阻限制了其NH3+头部与钙钛矿晶格的相互作用。因此,AMAI需要更多的热能将三维钙钛矿表面转化为二维钙钛矿。经碘化盐处理的钙钛矿表面的退火导致PEAI和AEAI的功率转换效率(PCE)下降,而AMAI的PCE提高。重要的是,amai处理的器件在薄膜退火后表现出更高的稳定性,在85°C高温稳定性测试后显示出100%的工作像素收率,代表了本工作中所有研究中最可靠的器件配置。这些结果揭示了AMAI作为一种可扩展的表面处理方法的潜力。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Thermally Stable Anthracene-Based 2D/3D Heterostructures for Perovskite Solar Cells

Thermally Stable Anthracene-Based 2D/3D Heterostructures for Perovskite Solar Cells
Bulky organic cations are used in perovskite solar cells as a protective barrier against moisture, oxygen, and ion diffusion. However, bulky cations can introduce thermal instabilities by reacting with the near-surface of the 3D perovskite forming low-dimensional phases, including 2D perovskites, and by diffusing away from the surface into the film. This study explores the thermal stability of Cs0.09FA0.91PbI3 3D perovskite surfaces treated with two anthracene salts─anthracen-1-ylmethylammonium iodide (AMAI) and 2-(anthracen-1-yl)ethylammonium iodide (AEAI)─and compares them with the widely used phenethylammonium iodide (PEAI). The steric hindrance of AMAI limits the interaction of its NH3+ head with the perovskite lattice, relative to what is seen with AEAI and PEAI. As a result, AMAI requires more thermal energy to convert the 3D perovskite surface to a 2D perovskite. Annealing of perovskite surfaces treated with the iodide salts results in decreased power conversion efficiencies (PCEs) for PEAI and AEAI, while a PCE enhancement is observed for AMAI. Importantly, AMAI-treated devices show enhanced stability upon annealing of the film and a 100% yield of working pixels after a high-temperature stability test at 85 °C, representing the most reliable device configuration among all those studied in this work. These results reveal the potential of AMAI as a scalable surface treatment.
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来源期刊
ACS Applied Materials & Interfaces
ACS Applied Materials & Interfaces 工程技术-材料科学:综合
CiteScore
16.00
自引率
6.30%
发文量
4978
审稿时长
1.8 months
期刊介绍: ACS Applied Materials & Interfaces is a leading interdisciplinary journal that brings together chemists, engineers, physicists, and biologists to explore the development and utilization of newly-discovered materials and interfacial processes for specific applications. Our journal has experienced remarkable growth since its establishment in 2009, both in terms of the number of articles published and the impact of the research showcased. We are proud to foster a truly global community, with the majority of published articles originating from outside the United States, reflecting the rapid growth of applied research worldwide.
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