利用碘化锌夹层提高卤化锡过氧化物太阳能电池的功率转换效率

IF 19.3 1区材料科学 Q1 CHEMISTRY, PHYSICAL

ACS Energy Letters Pub Date : 2024-11-25 DOI:10.1021/acsenergylett.4c02700

Chien-Yu Chen, Fuyuki Harata, Richard Murdey, Atsushi Wakamiya

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引用次数: 0

摘要

能级的最佳排列可以提高过氧化锡太阳能电池的性能。在这项研究中，我们发现在锡包晶和 C60 电子传输层之间插入真空沉积的碘化锌（ZnI2）层可以增强能级排列。FA0.75MA0.25SnI3（FA：甲脒；MA：甲铵）太阳能电池的开路电压提高了 0.1 V 以上，功率转换效率从 10.2% 提高到 12.8%。器件的搁置寿命也得到了改善。ZnI2 夹层对其他过氧化物成分也很有效，如 FASnI3 和 PEA0.15FA0.85SnI3（PEA：苯乙基铵），它们的器件效率分别从 6.8% 提高到 11.6%，从 6.2% 提高到 9.5%。开尔文探针测量得出的能级图表明，ZnI2 夹层减少了包晶和 C60 之间的带偏移。因此，C60 中的电子积聚宽度减小，减轻了非辐射电荷载流子重组损耗，提高了器件性能。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Enhanced Power Conversion Efficiency in Tin Halide Perovskite Solar Cells with Zinc Iodide Interlayers

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Enhanced Power Conversion Efficiency in Tin Halide Perovskite Solar Cells with Zinc Iodide Interlayers

Optimal alignment of the energy levels can improve the performance of perovskite solar cells. In this work, we show that energy level alignment can be enhanced by a vacuum-deposited zinc iodide (ZnI₂) layer inserted between tin perovskite and a C₆₀ electron transport layer. The open-circuit voltage of FA_0.75MA_0.25SnI₃ (FA: formamidinium; MA: methylammonium) solar cells increased by more than 0.1 V, while the power conversion efficiency increased from 10.2% to 12.8%. The shelf lifetimes of the devices are also improved. ZnI₂ interlayers are also effective with other perovskites compositions, such as FASnI₃ and PEA_0.15FA_0.85SnI₃ (PEA: phenethylammonium), with their device efficiencies increasing from 6.8% to 11.6% and from 6.2% to 9.5%, respectively. The energy level diagram, derived from Kelvin probe measurements, suggests that ZnI₂ interlayers reduce the band offset between perovskite and C₆₀. As a result, the electron accumulation width in C₆₀ is reduced, mitigating nonradiative charge carrier recombination losses and increasing the device performance.

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来源期刊

ACS Energy Letters Energy-Renewable Energy, Sustainability and the Environment

CiteScore

31.20

自引率

5.00%

发文量

469

审稿时长

1 months

期刊介绍： ACS Energy Letters is a monthly journal that publishes papers reporting new scientific advances in energy research. The journal focuses on topics that are of interest to scientists working in the fundamental and applied sciences. Rapid publication is a central criterion for acceptance, and the journal is known for its quick publication times, with an average of 4-6 weeks from submission to web publication in As Soon As Publishable format. ACS Energy Letters is ranked as the number one journal in the Web of Science Electrochemistry category. It also ranks within the top 10 journals for Physical Chemistry, Energy & Fuels, and Nanoscience & Nanotechnology. The journal offers several types of articles, including Letters, Energy Express, Perspectives, Reviews, Editorials, Viewpoints and Energy Focus. Additionally, authors have the option to submit videos that summarize or support the information presented in a Perspective or Review article, which can be highlighted on the journal's website. ACS Energy Letters is abstracted and indexed in Chemical Abstracts Service/SciFinder, EBSCO-summon, PubMed, Web of Science, Scopus and Portico.