Synergistic Regulation of High Dielectric Constant and H-Aggregation for Efficient and Thickness-Tolerant Organic Solar Cells.

Authors

Peng Zhang, Yunhan Gao, Linsen Li, Shuai Xu, Shuhan Yang, Youdi Zhang, Meifang Zhang, Nan Ye, Lixue Zhu, Tao Jia, Sha Liu, Zicheng Ding, Hongxiang Li, Lei Zhu, Qing Jiang, Tonghui Wang, Changduk Yang, Yiwang Chen

Published in

Angewandte Chemie (International ed. in English). Pages e2077291. Oct 11, 2026. Epub Oct 11, 2026.

Abstract

While the power conversion efficiency (PCE) of organic solar cells (OSCs) has advanced rapidly, their sensitivity with respect to active layer thickness hinders industrial fabrication. Herein, a novel acceptor BMD-6F was synthesized via molecular engineering of L8-BO, which realizes synergistic optimization of dielectric constant (6.20, 1.5 × that of L8-BO) and H-aggregation and thus enriches charge transport pathways, facilitates exciton dissociation, and suppresses recombination. As a result, the PM6:L8-BO:BMD-6F ternary OSC delivered a champion PCE of 20.34% at 100 nm, and exhibited excellent thickness tolerance with PCEs of 18.23% (300 nm) and 16.18% (500 nm). This work establishes a design principle for high-efficiency, thickness-tolerant OSCs, promising industrial applications.

PMID:
42860366
Bibliographic data and abstract were imported from PubMed on 12 Oct 2026.

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