A New Polymer Donor Enables Binary All‐Polymer Organic Photovoltaic Cells with 18% Efficiency and Excellent Mechanical Robustness
Chinese Academy of Sciences · Beijing National Laboratory for Molecular Sciences · +4 more institutions
Abstract
The development of polymerized small-molecule acceptors has boosted the power conversion efficiencies (PCEs) of all-polymer organic photovoltaic (OPV) cells to 17%. However, the polymer donors suitable for all-polymer OPV cells are still lacking, restricting the further improvement of their PCEs. Herein, a new polymer donor named PQM-Cl is designed and its photovoltaic performance is explored. The negative electrostatic potential and low average local ionization energy distribution of the PQM-Cl surface enable efficient charge generation and transfer process. When blending with a well-used polymer acceptor, PY-IT, the PQM-Cl-based devices deliver an impressive PCE of 18.0% with a superior fill factor of 80.7%,…
Citation impact
- FWCI
- 22.25
- Percentile
- 100%
- References
- 55
Authors
15- JWJingwen Wang
Chinese Academy of Sciences, Beijing National Laboratory for Molecular Sciences, University of Chinese Academy of Sciences
- YCYong CuiCorresponding
Chinese Academy of Sciences, Beijing National Laboratory for Molecular Sciences
- YXYe Xu
Chinese Academy of Sciences, Beijing National Laboratory for Molecular Sciences
- KXKaihu Xian
Tianjin University, Collaborative Innovation Center of Chemical Science and Engineering Tianjin
- PBPengqing Bi
Chinese Academy of Sciences, Beijing National Laboratory for Molecular Sciences
Topics & keywords
- Materials science
- Polymer
- Photovoltaic system
- Acceptor
- Organic solar cell
- Energy conversion efficiency
- Chemical engineering
- Nanotechnology
- Affordable and clean energy