Synergistic Molecular Engineering of Fully Non‐fused Ring Acceptors for Achieving Efficient Zigzag Charge Transport Channel and Low Non‐Radiative Voltage Loss
Fully non-fused ring acceptor (FNFRA) are potentially important for boosting the performance and lowering the material costs of organic solar cells (OSCs). Despite their potential, FNFRA-based OSCs have not yet matched the performance of their fused ring and partial non-fused ring counterparts due to limited molecular engineering research. In this work, by incorporating a synergistic strategy of tailoring the β-side chain and end-group of FNFRA with the cyclic "belt" simultaneously, a FNFRA named C6FT-2F2Cl is constructed. Compared with other symmetric FNFRAs, C6FT-2F2Cl features a shorter π-π stacking distance and an efficient zigzag charge transport channel, leading to enhanced and balanced charge carrier mobilities, lower non-radiative energy loss and a higher short-circuit current density. The power conversion efficiency (PCE) of the C6FT-2F2Cl-based OSC reached 13.19%, which is among the best in FNFRA-based devices. This work provides new valuable insights for the charge transport mechanism associated FNFRAs and paves a new route to the materials design toward high-performance and low-cost OSCs.
Authors
- Xin Tang (ORCID: https://orcid.org/0000-0003-4420-2109)
- Wenjing Sun (ORCID: https://orcid.org/0000-0002-8850-6713)
- Rui Ma (ORCID: https://orcid.org/0000-0002-2064-5215)
- Hao‐Li Zhang (ORCID: https://orcid.org/0000-0002-6322-5202)
- Lingxian Meng (ORCID: https://orcid.org/0000-0003-2464-6247)
- Yamin Zhang (ORCID: https://orcid.org/0000-0002-7640-4197)
- Wencai Wang (ORCID: https://orcid.org/0000-0001-6204-9684)
- Zhan Huang (ORCID: https://orcid.org/0009-0003-7027-7398)
- Bin Kan (ORCID: https://orcid.org/0000-0003-2305-3482)
- Yongrui Yang (ORCID: https://orcid.org/0000-0002-4942-7078)
- Tianqiang Cui
- Xiaoning Ru
- Songyong Gan
- Jia Wang (ORCID: https://orcid.org/0009-0002-9910-1639)
Institutions
- Chinese Academy of Sciences (CN)
- Nankai University (CN)
- Zhengzhou University (CN)
- Beijing National Laboratory for Molecular Sciences (CN)
- Institute of Chemistry (CN)
- University of Chinese Academy of Sciences (CN)
- State Key Laboratory of Applied Organic Chemistry
- Lanzhou University (CN)
Publication Details
- Journal
- Macromolecular Rapid Communications
- Published
- 2025-02-20
- DOI
- https://doi.org/10.1002/marc.202401037
- Citations
- 3
- Primary Topic
- Organic Electronics and Photovoltaics
- Type
- article
- Field-Weighted Citation Impact
- 2.19
Funders
- National Natural Science Foundation of China
- National Key Research and Development Program of China
- Fundamental Research Funds for the Central Universities