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Efficient organic solar cells based on a new “Y-series” non-fullerene acceptor with an asymmetric electron-deficient-core

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Abstract

Herein, a new “Y-series” non-fullerene acceptor, Y21, bearing an asymmetric electron-deficient-core (DA′D) and fluorinated dicyanomethylene derivatives as flanking groups, was designed and synthesized for organic solar cell applications. Rather than being a perfect C2 symmetric traditional “Y-series” acceptor, Y21 possesses an electron-withdrawing unit (A′) shifted from the center of DA′D, turning into an asymmetric molecular geometry. Photovoltaic devices based on PM6:Y21 can realize a high Jsc of 24.9 mA cm−2 and a PCE of 15.4%. Our work demonstrates a new way to tune the photoelectronic properties of the “Y-series” NFAs.

Graphical abstract: Efficient organic solar cells based on a new “Y-series” non-fullerene acceptor with an asymmetric electron-deficient-core

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Article information


Submitted
31 Dec 2019
Accepted
10 Mar 2020
First published
10 Mar 2020

Chem. Commun., 2020, Advance Article
Article type
Communication

Efficient organic solar cells based on a new “Y-series” non-fullerene acceptor with an asymmetric electron-deficient-core

F. Cai, C. Zhu, J. Yuan, Z. Li, L. Meng, W. Liu, H. Peng, L. Jiang, Y. Li and Y. Zou, Chem. Commun., 2020, Advance Article , DOI: 10.1039/C9CC10076H

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