Acridine‐Substituted‐Centronucleus Nonfullerene Acceptors Enables Organic Solar Cells with Over 20% Efficiency with Low Nonradiative Recombination Loss

Abstract In this work, we propose a novel strategy of introducing luminescent acridine units for central nuclear substitution in quinoxaline‐based acceptor molecules (named AQx‐ o ‐Ac and AQx‐ m ‐Ac) to enhance their photoluminescence quantum yields (PLQY), which can effectively improve the electroluminescent quantum efficiency (EQE EL ) of OSCs and thereby suppress Δ E nr . In addition, the substituted acridine unit accelerates molecular aggregation and optimizes molecular crystallization, effectively alleviating the static disorder of acceptor molecules and facilitating charge extraction and transport in OSCs. As a result, the PM6:AQx‐ m ‐Ac binary OSCs achieve an excellent PCE of 18.64% with an exceptionally low Δ E nr of 0.166 eV. To the best of our knowledge, a Δ E nr of 0.166 eV represents the lowest value reported for OSCs achieving PCEs over 18 %. Finally, the acceptor AQx‐ m ‐Ac is incorporated into PM6:eC9 blend as the third component, and the optimal ternary device produces a superior PCE of 20.28%. This work highlights the potential of promoting luminescence for suppressing nonradiative energy loss and charts a viable path for upcoming breakthrough in high‐efficiency organic photovoltaics.

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Publication Details

Journal
Angewandte Chemie
Published
2025-04-03
DOI
https://doi.org/10.1002/ange.202500129
Citations
5
Primary Topic
Organic Electronics and Photovoltaics
Type
article
Field-Weighted Citation Impact
3.65
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article

Acridine‐Substituted‐Centronucleus Nonfullerene Acceptors Enables Organic Solar Cells with Over 20% Efficiency with Low Nonradiative Recombination Loss

Zhongwei Ge, Zhaozhao Bi, Huotian Zhang, Yuxuan Li et al.
5 citations
Angewandte Chemie
Organic Electronics and Photovoltaics
3.65
article

Acridine‐Substituted‐Centronucleus Nonfullerene Acceptors Enables Organic Solar Cells with Over 20% Efficiency with Low Nonradiative Recombination Loss

Zhongwei Ge, Zhaozhao Bi, Huotian Zhang, Yuxuan Li, Zheng Tang, Jiawei Qiao, Xiaotao Hao, Jiaxin Gao, Yanming Sun, Jianqi Zhang, Junjie Zhang, Sha Liu, Li Liu, Jinfeng Liu, Feng wei Gao, Jun Yan, Xiaopeng Duan, Wei Ma
article en
5 citations

Abstract

Abstract In this work, we propose a novel strategy of introducing luminescent acridine units for central nuclear substitution in quinoxaline‐based acceptor molecules (named AQx‐ o ‐Ac and AQx‐ m ‐Ac) to enhance their photoluminescence quantum yields (PLQY), which can effectively improve the electroluminescent quantum efficiency (EQE EL ) of OSCs and thereby suppress Δ E nr . In addition, the substituted acridine unit accelerates molecular aggregation and optimizes molecular crystallization, effectively alleviating the static disorder of acceptor molecules and facilitating charge extraction and transport in OSCs. As a result, the PM6:AQx‐ m ‐Ac binary OSCs achieve an excellent PCE of 18.64% with an exceptionally low Δ E nr of 0.166 eV. To the best of our knowledge, a Δ E nr of 0.166 eV represents the lowest value reported for OSCs achieving PCEs over 18 %. Finally, the acceptor AQx‐ m ‐Ac is incorporated into PM6:eC9 blend as the third component, and the optimal ternary device produces a superior PCE of 20.28%. This work highlights the potential of promoting luminescence for suppressing nonradiative energy loss and charts a viable path for upcoming breakthrough in high‐efficiency organic photovoltaics.

Angewandte ChemieVol. 137(24)
Linköping University (SE), Shandong University (CN), Chinese University of Hong Kong (HK), Donghua University (CN), Dongguan University of Technology (CN), Chinese University of Hong Kong, Shenzhen (CN), Centre of Excellence for Advanced Materials (CN), National Center for Nanoscience and Technology (CN), State Key Laboratory of Crystal Materials, Beihang University (CN), Xi'an Jiaotong University (CN)
Openalex Percentile: Top 7%
Organic Electronics and Photovoltaics
3.65
DOISourceOpenAlex
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