Issue 41, 2018

Pyran-annulated perylene diimide derivatives as non-fullerene acceptors for high performance organic solar cells

Abstract

There has been growing interest in the effectual strategy of constructing non-fullerene acceptors for organic solar cells that may overcome the defect of traditional fullerene-based acceptors. Herein, two novel push–pull (acceptor–donor–acceptor) type small-molecule acceptors, that is, TPA-PDI2 and TPA-PDI3, with triphenylamine (TPA) as the core unit and pyran-annulated perylene diimides (Py-PDIs) as peripheral groups are designed and synthesized for non-fullerene organic solar cells (OSCs). After device optimization, OSCs based on TPA-PDI3 demonstrate good device performance with a power conversion efficiency (PCE) as high as 5.84%, surpassing the TPA-PDI2-based counterparts fabricated under identical conditions (1.314% PCE). The high efficiency for TPA-PDI3 can be attributed to the complementary absorption spectra with the donor material (PBDB-T), balanced carrier transport and favorable morphologies. To the best of our knowledge, this PCE of 5.84% is among the highest values based on ethynyl-functionalized TPA-shaped non-fullerene acceptors so far.

Graphical abstract: Pyran-annulated perylene diimide derivatives as non-fullerene acceptors for high performance organic solar cells

Supplementary files

Article information

Article type
Paper
Submitted
10 Jun 2018
Accepted
11 Aug 2018
First published
18 Sep 2018

J. Mater. Chem. C, 2018,6, 11111-11117

Pyran-annulated perylene diimide derivatives as non-fullerene acceptors for high performance organic solar cells

G. Li, Y. Zhang, T. Liu, S. Wang, D. Li, J. Li, F. Li, L. Yang, Z. Luo, C. Yang, H. Yan, P. Hao, Q. Shang and B. Tang, J. Mater. Chem. C, 2018, 6, 11111 DOI: 10.1039/C8TC02823K

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