Meniscus-modulated blade coating enables high-quality α-phase formamidinium lead triiodide crystals and efficient perovskite minimodules

IF 38.6 1区材料科学 Q1 CHEMISTRY, PHYSICAL

Joule Pub Date : 2024-09-18 DOI:10.1016/j.joule.2024.06.008

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Abstract

Meniscus coating technique is extensively employed for fabricating large-area perovskite films. Based on this technique, there are still challenges of formamidinium lead triiodide (FAPbI₃) nucleation and crystallization in the film-forming process, which significantly hinders the device performance of perovskite solar cell (PSC) modules. Here, we developed a kind of meniscus-modulated blade coating method combined with solvent engineering to realize scalable, high-quality α-phase FAPbI₃ films with larger grain sizes, preferred crystal orientation, excellent uniformity, and controllable thickness. On this basis, a notable 25.31% power conversion efficiency (PCE) for small-area cells (0.09 cm²) and 23.34% PCE for minimodules (aperture area: 12.4 cm²) with a certified PCE of 23.09% have been achieved. Besides, this minimodule exhibited exceptional device stabilities by remaining above 93% of the initial value after 2,000 h outdoor aging testing. This work provides a very promising meniscus coating fabrication method to realize high-performance FAPbI₃ perovskite solar cells and photovoltaic modules.

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半月板调制叶片涂层可实现高质量的α相甲脒三碘化铅晶体和高效的过氧化物小模块

半月板镀膜技术被广泛用于制造大面积的过氧化物薄膜。基于这种技术，在成膜过程中仍存在甲脒三碘化铅（FAPbI3）成核和结晶的难题，这极大地阻碍了包光体太阳能电池（PSC）组件的器件性能。在此，我们开发了一种结合溶剂工程的半月板调制刀片镀膜方法，以实现可扩展的高质量α相 FAPbI3 薄膜，这种薄膜具有较大的晶粒尺寸、优选的晶体取向、优异的均匀性和可控的厚度。在此基础上，小面积电池（0.09 平方厘米）实现了 25.31% 的显著功率转换效率 (PCE)，微型模块（开孔面积：12.4 平方厘米）实现了 23.34% 的显著功率转换效率 (PCE)，经认证的 PCE 为 23.09%。此外，这种微模块还表现出卓越的器件稳定性，在经过 2,000 小时的室外老化测试后，仍能保持 93% 以上的初始值。这项工作为实现高性能 FAPbI3 包晶太阳能电池和光伏模块提供了一种非常有前景的半月板涂层制造方法。

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来源期刊

Joule Energy-General Energy

CiteScore

53.10

自引率

2.00%

发文量

198

期刊介绍： Joule is a sister journal to Cell that focuses on research, analysis, and ideas related to sustainable energy. It aims to address the global challenge of the need for more sustainable energy solutions. Joule is a forward-looking journal that bridges disciplines and scales of energy research. It connects researchers and analysts working on scientific, technical, economic, policy, and social challenges related to sustainable energy. The journal covers a wide range of energy research, from fundamental laboratory studies on energy conversion and storage to global-level analysis. Joule aims to highlight and amplify the implications, challenges, and opportunities of novel energy research for different groups in the field.