Issue 45, 2020

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

Abstract

The control of intramolecular charge transfer between the fused-ring core and terminal unit by selecting a suitable π-bridge has 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, thieno[3,4-c]pyrrole-4,6-dione (TPD), as a π-bridge to synthesize a new NFA, 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 0.91 V and low energy loss of 0.55 eV. This work proved that electron-deficient units were also a good choice for the construction of high-performance A–π–D–π–A type NFAs.

Graphical abstract: Utilizing an electron-deficient thieno[3,4-c]pyrrole-4,6-dione (TPD) unit as a π-bridge to improve the photovoltaic performance of A–π–D–π–A type acceptors

Supplementary files

Article information

Article type
Communication
Submitted
26 Sep 2020
Accepted
13 Okt 2020
First published
14 Okt 2020

J. Mater. Chem. C, 2020,8, 15981-15984

Utilizing an electron-deficient thieno[3,4-c]pyrrole-4,6-dione (TPD) unit as a π-bridge 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, 8, 15981 DOI: 10.1039/D0TC04601A

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