Molecular Optimization Enables over 13% Efficiency in Organic Solar Cells
Chinese Academy of Sciences · Beijing National Laboratory for Molecular Sciences · +2 more institutions
Abstract
A new polymer donor (PBDB-T-SF) and a new small molecule acceptor (IT-4F) for fullerene-free organic solar cells (OSCs) were designed and synthesized. The influences of fluorination on the absorption spectra, molecular energy levels, and charge mobilities of the donor and acceptor were systematically studied. The PBDB-T-SF:IT-4F-based OSC device showed a record high efficiency of 13.1%, and an efficiency of over 12% can be obtained with a thickness of 100-200 nm, suggesting the promise of fullerene-free OSCs in practical applications.
Citation impact
- FWCI
- 268.45
- Percentile
- 100%
- References
- 38
Authors
7- WZWenchao ZhaoCorresponding
Chinese Academy of Sciences, Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Polymer Physics and Chemistry, University of Chinese Academy of Sciences
- SLSunsun Li
Chinese Academy of Sciences, Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Polymer Physics and Chemistry, University of Chinese Academy of Sciences
- HYHuifeng Yao
Chinese Academy of Sciences, Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Polymer Physics and Chemistry, University of Chinese Academy of Sciences
- SZShaoqing Zhang
Chinese Academy of Sciences, Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Polymer Physics and Chemistry, University of Chinese Academy of Sciences
- YZYun Zhang
Chinese Academy of Sciences, Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Polymer Physics and Chemistry, University of Chinese Academy of Sciences
Topics & keywords
- Organic solar cell
- Chemistry
- Fullerene
- Acceptor
- Molecule
- Absorption (acoustics)
- Absorption spectroscopy
- Polymer
- Affordable and clean energy