基于端接吲哚醌类化合物的阴极中间层使二元有机太阳能电池的效率达到19%。

IF 12.2 2区材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Materials Horizons Pub Date : 2025-05-12 DOI:10.1039/d5mh00536a

Haoran Gu, Yao Tong, Hongli Xu, Cheng Wang, Bowei Xu, Dongling Geng, Laju Bu, Long Ye, Yunfeng Deng, Yanhou Geng

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引用次数: 0

摘要

阴极中间层（CILs）是有机太阳能电池（OSCs）的重要组成部分，但高性能的CILs主要依赖于芳香族单元。在此，我们合理地设计并合成了基于端部茚二酮的quinoidal结构的CIL （Q6P）。通过单晶x射线衍射和密度泛函理论（DFT）计算证实了Q6P的分子结构。加入膦酸盐侧链不仅增强了Q6P在极性溶剂中的溶解度，而且赋予了Q6P自掺杂特性，并通过实验验证了其自掺杂机理。此外，quinoidal框架和低洼的LUMO能级协同提高了Q6P的自掺杂水平。Q6P还表现出良好的电荷传输和高效的电荷提取。集成到OSCs中时，基于q6p的器件实现了超过19%的功率转换效率（PCE）。

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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A cathode interlayer based on an indandione-terminated quinoidal compound enables 19% efficiency in binary organic solar cells.

Cathode interlayers (CILs) are critical components in organic solar cells (OSCs), yet high-performance CILs remain predominantly reliant on aromatic units. Herein, we rationally design and synthesize a CIL (Q6P) based on an indandione-terminated quinoidal structure. The molecular structure of Q6P was unambiguously confirmed through single-crystal X-ray diffraction and supported by density functional theory (DFT) calculations. Incorporating phosphonate side chains not only enhanced the solubility of Q6P in polar solvents but also imparted self-doping characteristics, with the self-doping mechanism verified experimentally. Additionally, the quinoidal framework and low-lying LUMO energy level synergistically improved the self-doping level of Q6P. Q6P also demonstrated good charge transport and efficient charge extraction. When integrated into OSCs, the Q6P-based devices achieved a power conversion efficiency (PCE) of over 19%.

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来源期刊

Materials Horizons CHEMISTRY, MULTIDISCIPLINARY-MATERIALS SCIENCE, MULTIDISCIPLINARY

CiteScore

18.90

自引率

2.30%

发文量

306

审稿时长

1.3 months

期刊介绍： Materials Horizons is a leading journal in materials science that focuses on publishing exceptionally high-quality and innovative research. The journal prioritizes original research that introduces new concepts or ways of thinking, rather than solely reporting technological advancements. However, groundbreaking articles featuring record-breaking material performance may also be published. To be considered for publication, the work must be of significant interest to our community-spanning readership. Starting from 2021, all articles published in Materials Horizons will be indexed in MEDLINE©. The journal publishes various types of articles, including Communications, Reviews, Opinion pieces, Focus articles, and Comments. It serves as a core journal for researchers from academia, government, and industry across all areas of materials research. Materials Horizons is a Transformative Journal and compliant with Plan S. It has an impact factor of 13.3 and is indexed in MEDLINE.