Synthesis of Geminal Dibromovinyl Asymmetrically Modified Nonfullerene Acceptors and Their Photovoltaic Properties
A nonfullerene acceptor (NFA), ACHV, is designed and synthesized by introducing a novel 2,2-dibromovinyl substituent onto the central quinoxaline unit. Compared with the control acceptor ACHM, the 2,2-dibromovinyl group profoundly modulates the electrostatic potential distribution, dipole moment, light-harvesting characteristics, and aggregation behavior of the acceptor ACHV. Consequently, organic solar cells (OSCs) based on ACHV achieve a power conversion efficiency (PCE) of 17.43% with simultaneously enhanced <i>V</i><sub>oc</sub> and FF without sacrificing <i>J</i><sub>sc</sub>. This work highlights a potential molecular design strategy for efficient OSCs.
Authors
- Longyu Li
- Ruibin Bian
- Jangsik Yang
- Yongsheng Chen (ORCID: https://orcid.org/0000-0002-8009-2536)
- Xiangjian Wan
- Jingyi Huo
- Wendi Shi
- Chenxi Li
- Xin Chen
- Jie Wang
- Zhaoyang Yao
Institutions
- Nankai University (CN)
- Ingenierie des Materiaux polymeres (FR)
Publication Details
- Journal
- The Journal of Organic Chemistry
- Published
- 2026-01-02
- DOI
- https://doi.org/10.1021/acs.joc.5c02377
- Primary Topic
- Organic Electronics and Photovoltaics
- Type
- article
- Field-Weighted Citation Impact
- 0.00