Robust Organic Photovoltaic Ternary Strategy Pairing Tunable Wide-Bandgap Perovskites for Efficient Perovskite/Organic Tandems.

IF 26.8 1区材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Advanced Materials Pub Date : 2025-10-12 DOI:10.1002/adma.202508611

Nan Wei,Zhiyu Gao,Feng Qi,Haoming Song,Bohan Shang,Xuelin Wang,Jieni Chen,Xiangmeng Deng,Xinyue Cui,Yuqiang Liu,Zheng Tang,Wenkai Zhang,Huawei Hu,Yahui Liu,Hao Lu,Cong Chen,Dewei Zhao,Zhishan Bo

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引用次数: 0

Abstract

Perovskite/organic tandem solar cells (P/OTSCs) have attracted wide attention. However, insufficient near-infrared absorption of organic bottom subcells and poor compatibility with perovskite top subcells restrict their further development. Here, a ternary strategy of combining near-infrared-absorbing mBZS-4F and crystalline L8-BO as mixed acceptors along with D18 donor is proposed to form an organic bottom absorber. This approach effectively extended the near-infrared absorption to 970 nm while maintaining low voltage loss (0.54 eV). By adjusting the L8-BO:mBZS-4F ratio to 2:1, a high-performance OSC is achieved with a remarkable power conversion efficiency (PCE) of 20.42% and an outstanding fill factor (FF) of 81.25%. This combination strategy exhibits robust compatibility with a 1.80, 1.86, and 1.88 eV wide-bandgap perovskite top subcell, enabling their corresponding P/OTSCs with PCEs of 25.82, 25.50, and 26.08%, respectively. The work suggests that such a ternary strategy not only benefits single-junction OSC performance but also suits a wide range of wide-bandgap perovskite subcells for efficient P/OTSCs.

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用于高效钙钛矿/有机串联的可调谐宽禁带钙钛矿的稳健有机光伏三元策略配对。

钙钛矿/有机串联太阳能电池（P/OTSCs）引起了广泛的关注。然而，有机底亚电池近红外吸收不足，与钙钛矿顶亚电池相容性差，制约了其进一步发展。本文提出了一种将近红外吸收的mBZS-4F和晶体L8-BO作为混合受体与D18给体结合形成有机底吸收剂的三元策略。该方法有效地将近红外吸收扩展到970 nm，同时保持低电压损失（0.54 eV）。通过将L8-BO:mBZS-4F比例调整为2:1，实现了高性能的OSC，功率转换效率（PCE）达到20.42%，填充系数（FF）达到81.25%。该组合策略与1.80、1.86和1.88 eV的宽带隙钙钛矿顶部亚电池具有良好的兼容性，使其相应的P/OTSCs的pce分别为25.82、25.50和26.08%。这项工作表明，这种三元策略不仅有利于单结OSC性能，而且适用于广泛的宽带隙钙钛矿亚电池，用于高效的P/ otsc。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Advanced Materials 工程技术-材料科学：综合

CiteScore

43.00

自引率

4.10%

发文量

2182

审稿时长

2 months

期刊介绍： Advanced Materials, one of the world's most prestigious journals and the foundation of the Advanced portfolio, is the home of choice for best-in-class materials science for more than 30 years. Following this fast-growing and interdisciplinary field, we are considering and publishing the most important discoveries on any and all materials from materials scientists, chemists, physicists, engineers as well as health and life scientists and bringing you the latest results and trends in modern materials-related research every week.