Molecular Optimization Enables over 13% Efficiency in Organic Solar Cells
Wenchao ZhaoBeijing
National Laboratory for Molecular Sciences, State Key Laboratory of
Polymer Physics and Chemistry, CAS Research/Education Center for Excellence
in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, ChinaSunsun LiBeijing
National Laboratory for Molecular Sciences, State Key Laboratory of
Polymer Physics and Chemistry, CAS Research/Education Center for Excellence
in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, ChinaHuifeng YaoBeijing
National Laboratory for Molecular Sciences, State Key Laboratory of
Polymer Physics and Chemistry, CAS Research/Education Center for Excellence
in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, ChinaShaoqing ZhangBeijing
National Laboratory for Molecular Sciences, State Key Laboratory of
Polymer Physics and Chemistry, CAS Research/Education Center for Excellence
in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, ChinaYun ZhangBeijing
National Laboratory for Molecular Sciences, State Key Laboratory of
Polymer Physics and Chemistry, CAS Research/Education Center for Excellence
in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, ChinaBei YangBeijing
National Laboratory for Molecular Sciences, State Key Laboratory of
Polymer Physics and Chemistry, CAS Research/Education Center for Excellence
in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, ChinaJianhui HouBeijing
National Laboratory for Molecular Sciences, State Key Laboratory of
Polymer Physics and Chemistry, CAS Research/Education Center for Excellence
in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
2017en
ABI
Annotatsiya
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.
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