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Issue 18, 2020
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An efficient medium-bandgap nonfullerene acceptor for organic solar cells

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Abstract

A medium-bandgap acceptor IBCT based on an 2-(1-oxo-1,2-dihydro-3H-benzo[b]cyclopenta[d]thiophen-3-ylidene)malononitrile end unit was developed. IBCT has an optical bandgap of 1.65 eV and afforded a power conversion efficiency of 11.26% and an open-circuit voltage of 1.02 V in single-junction organic solar cells when blending with a wide-bandgap copolymer donor L1. The L1:IBCT solar cell was further used as the front cell in tandem solar cells, yielding a 15.25% efficiency. IBCT is among the best medium-bandgap acceptors.

Graphical abstract: An efficient medium-bandgap nonfullerene acceptor for organic solar cells

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Supplementary files

Article information


Submitted
01 Mar 2020
Accepted
12 Apr 2020
First published
15 Apr 2020

J. Mater. Chem. A, 2020,8, 8857-8861
Article type
Communication

An efficient medium-bandgap nonfullerene acceptor for organic solar cells

Q. Liu, K. Jin, W. Li, Z. Xiao, M. Cheng, Y. Yuan, S. Shi, Z. Jin, F. Hao, S. Yang and L. Ding, J. Mater. Chem. A, 2020, 8, 8857
DOI: 10.1039/D0TA02427A

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