Topology‐Engineered Coordination Polymers for Enhanced Hole Transport in Organic Solar Cells
ABSTRACT The commercialized PEDOT:PSS is the most commonly used hole‐transporting material in organic solar cells (OSCs) due to its solution processability, good transparency, and universality across different material systems. However, its relatively shallow work function (WF) and unsatisfactory longitudinal conductivity constrain the device performance. Here, we develop three coordination polymers (CPs) with adjustable spatial topologies based on copper iodide (CuI) and 2,7‐di(pyridine‐4‐yl)acridine (DPA), and reveal the mechanism by which topology‐engineered regulation mediates the properties of PEDOT:PSS and the active layer as well as OSC performance. Through the functions of coordination‐induced separation and stacking enhancement effect induced by topology, the blended CPs‐PEDOT:PSS films exhibit better π‐π stacking, higher longitudinal conductivity and a deeper WF level, facilitating carrier dynamics and reducing interfacial voltage loss. The resulting champion device based on the binary active layer exhibits a high efficiency of over 20%. This work demonstrates the application potential of topology‐engineered CPs as hole‐transporting materials and provides a rational strategy to construct robust interlayers.
Authors
- Y T Li
- Mama El Rhazi (ORCID: https://orcid.org/0000-0003-3612-8551)
- Chuanxiu Jiang
- X D Liu
- Yanrong Yang (ORCID: https://orcid.org/0000-0002-2642-2207)
- Hong-Chuan Fan (ORCID: https://orcid.org/0000-0002-1705-4705)
- Z.H. Liu (ORCID: https://orcid.org/0000-0002-9199-6493)
- Wei Zhang (ORCID: https://orcid.org/0000-0001-7800-3189)
- Jin Zhou (ORCID: https://orcid.org/0000-0002-1534-2279)
- Lizhi Zhang
- Huiqiong Zhou (ORCID: https://orcid.org/0000-0003-2124-6563)
- Alex K.‐Y. Jen (ORCID: https://orcid.org/0000-0002-9219-7749)
- Jianqi Zhang (ORCID: https://orcid.org/0000-0002-3549-1482)
- Yuan Zhang (ORCID: https://orcid.org/0000-0003-0670-2428)
- Hong Zhang
Institutions
- Alliance Bioversity International - CIAT (IT)
- City University of Hong Kong (HK)
- Mianyang Normal University (CN)
- Beijing University of Technology (CN)
- Shanghai Fudan Microelectronics (China) (CN)
- National Center for Nanoscience and Technology (CN)
- China University of Petroleum, East China (CN)
- Université Hassan II Mohammedia (MA)
- University of Chinese Academy of Sciences (CN)
- Beijing Advanced Sciences and Innovation Center (CN)
- Beihang University (CN)
Publication Details
- Journal
- Angewandte Chemie
- Published
- 2026-05-27
- DOI
- https://doi.org/10.1002/ange.9811085
- Primary Topic
- Organic Electronics and Photovoltaics
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- National Natural Science Foundation of China
- Fundamental Research Funds for the Central Universities