Beijing 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.
University of Chinese Academy of Sciences , Beijing 100049, China.
J Am Chem Soc. 2017 May 31;139(21):7148-7151. doi: 10.1021/jacs.7b02677. Epub 2017 May 22.
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.
为了制备不含富勒烯的有机太阳能电池（OSC），我们设计并合成了一种新型聚合物给体（PBDB-T-SF）和小分子受体（IT-4F）。我们系统地研究了氟化对给体和受体的吸收光谱、分子能级和电荷迁移率的影响。基于 PBDB-T-SF:IT-4F 的 OSC 器件的效率达到了 13.1%，这是一个新的记录，而且在 100-200nm 的厚度下，效率超过 12%，这表明了不含富勒烯的 OSC 在实际应用中的潜力。
