a.State Key Laboratory and Institute of Elemento-Organic Chemistry, The Centre of Nanoscale Science and Technology and Key Laboratory of Functional Polymer Materials, Renewable Energy Conversion and Storage Center (RECAST), College of Chemistry, Nankai University, Tianjin 300071, China
b.State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Center for Advanced Low-dimension Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, China
yschen99@nankai.edu.cn
收稿:2022-02-03,
修回:2022-2-28,
录用:2022-3-7,
网络首发:2022-06-06,
纸质出版:2022-08-01
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Chen, H.; Cao, X.; Xu, X.; Li, C.; Wan, X.; Yao, Z.; Chen, Y. A low reorganization energy and two-dimensional acceptor with four end units for organic solar cells with low Eloss. Chinese J. Polym. Sci. 2022, 40, 921–927 DOI: 10.1007/s10118-022-2730-4.
Hongbin Chen, Xiangjian Cao, Xiaoyun Xu, et al. A Low Reorganization Energy and Two-dimensional Acceptor with Four End Units for Organic Solar Cells with Low
Chen, H.; Cao, X.; Xu, X.; Li, C.; Wan, X.; Yao, Z.; Chen, Y. A low reorganization energy and two-dimensional acceptor with four end units for organic solar cells with low Eloss. Chinese J. Polym. Sci. 2022, 40, 921–927 DOI: 10.1007/s10118-022-2730-4. DOI:
Hongbin Chen, Xiangjian Cao, Xiaoyun Xu, et al. A Low Reorganization Energy and Two-dimensional Acceptor with Four End Units for Organic Solar Cells with Low
A novel two-dimensional A-D-A acceptor named as CH8 with four electron-withdrawing end units has an extremely low electron reorganization energy of 98 meV. When blended with PM6
a considerate PCE of 9.37%
along with a high Voc 0.889 V and low Eloss below 0.6 eV is achieved.
A novel two-dimensional A-D-A acceptor named as
CH8
with four electron-withdrawing end units has been successfully designed and synthesized. The enlarged conjugation in two directions renders
CH8
exhibit an extremely low electron reorganization energy of 98 meV
which makes
CH8
a potential candidate for outstanding organic semiconductor material. When blended with
PM6
a considerate power conversion efficiency of 9.37% along with a high open-circuit voltage (
V
oc
) 0.889 V and low energy loss (
E
loss
) below 0.6 eV is achieved. These results indicate that the two-dimensional A-D-A molecule with four electron-withdrawing end units is an effective molecular design strategy to achieve lower voltage loss and also possible high performance for organic photovoltaics if ideal morphology could be achieved.
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