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Utilizing electron-deficient thieno[3,4 c]pyrrole-4,6-dione (TPD) unit as π-bridges to improve the photovoltaic performance of A-π-D-π-A type acceptors

Abstract

Control of the intramolecular charge transfer between the fused-ring core and terminal unit by selecting a suitable π-bridge have a strong impact on the photovoltaic performance of A-π-D-π-A type non-fullerene acceptors (NFAs). Here, we used a strong electron-deficient unit of thieno[3,4 c]pyrrole-4,6-dione (TPD) as π-bridges to synthesize a new NFA of TPD8, which exhibited a low optical bandgap of 1.46 eV. Organic solar cells based on PTQ10:TPD8 gave a power conversion efficiency (PCE) of 10.4% with a relatively high open-circuit voltage (VOC) of 0.91V and low energy loss of 0.55 eV. This work proved that electron-deficient units were also good choice to construct high-performance A-π-D-π-A type NFAs.

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Article information


Submitted
26 Sep 2020
Accepted
13 Oct 2020
First published
14 Oct 2020

J. Mater. Chem. C, 2020, Accepted Manuscript
Article type
Communication

Utilizing electron-deficient thieno[3,4 c]pyrrole-4,6-dione (TPD) unit as π-bridges to improve the photovoltaic performance of A-π-D-π-A type acceptors

J. Li, C. Sun, A. Tang, B. Zhang, Q. Guo, E. Zhou and Y. Li, J. Mater. Chem. C, 2020, Accepted Manuscript , DOI: 10.1039/D0TC04601A

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