一种简便的反溶剂方法,可同时提高逐层有机太阳能电池的效率和可重复性

IF 6 3区 工程技术 Q2 ENERGY & FUELS
Solar RRL Pub Date : 2025-09-06 DOI:10.1002/solr.202500210
Xie Di, Xiang Huang, Yi Jin, Rui Hu, Xiaojie Ren, Yitong Ji, Xiaotong Liu, Xueyuan Yang, Wenchao Huang
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引用次数: 0

摘要

逐层旋转镀膜是一种被广泛认可的高效有机太阳能电池的制备方法。然而,在传统结构的LBL装置中,困在底层给体膜中的残留溶剂会影响给体和受体材料之间的界面以及上层受体材料的形态,从而导致再现性和效率较差。本研究提供了一种简单的策略,即旋转涂覆甲醇和乙酸的混合溶剂,促进从供体材料中去除残留溶剂。混合抗溶剂的引入还可以优化粗糙度,促进给体材料的结晶,改善界面性能。未经任何进一步处理的装置显示出17.8%的功率转换效率(PCE),而用原始甲醇处理的装置的效率高达18.4%。值得注意的是,用混合甲醇和乙酸处理的装置进一步将效率提高到19.3%。此外,该方法也适用于柔性osc,产生18.0%的效率。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

A Facile Anti-Solvent Method to Simultaneously Improve Efficiency and Reproducibility of Layer-by-Layer Organic Solar Cells

A Facile Anti-Solvent Method to Simultaneously Improve Efficiency and Reproducibility of Layer-by-Layer Organic Solar Cells

Layer-by-layer (LBL) spin-coating is a widely recognized method for developing high-efficiency organic solar cells (OSCs). However, in the LBL device with a conventional architecture, the residual solvents trapped in the underlying donor film will affect the interface between donor and acceptor materials as well as the morphology of upper acceptor materials, thus leading to poor reproducibility and efficiency. This study provides a facile strategy that spin-coats a mixed solvent of methanol and acetic acid, facilitating the removal of residual solvents from the donor material. The introduction of the mixed anti-solvent can also optimize the roughness, facilitate the crystallization of the donor material, and improve interfacial properties. The devices without any further treatment exhibit a power conversion efficiency (PCE) of 17.8%, while devices treated with pristine methanol achieve an efficiency up to 18.4%. Notably, devices treated with mixed methanol and acetic acid further boost efficiency to 19.3%. Furthermore, this approach is also applicable to flexible OSCs, yielding an efficiency of 18.0%.

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来源期刊
Solar RRL
Solar RRL Physics and Astronomy-Atomic and Molecular Physics, and Optics
CiteScore
12.10
自引率
6.30%
发文量
460
期刊介绍: Solar RRL, formerly known as Rapid Research Letters, has evolved to embrace a broader and more encompassing format. We publish Research Articles and Reviews covering all facets of solar energy conversion. This includes, but is not limited to, photovoltaics and solar cells (both established and emerging systems), as well as the development, characterization, and optimization of materials and devices. Additionally, we cover topics such as photovoltaic modules and systems, their installation and deployment, photocatalysis, solar fuels, photothermal and photoelectrochemical solar energy conversion, energy distribution, grid issues, and other relevant aspects. Join us in exploring the latest advancements in solar energy conversion research.
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