Jump to main content
Jump to site search


Enhancing the performance of the electron acceptor ITIC-Th via tailoring its end groups

Author affiliations

Abstract

We choose the high-performance nonfullerene acceptor ITIC-Th as an example, and incorporate electron-donating methoxy and electron-withdrawing F groups onto the terminal group 1,1-dicyanomethylene-3-indanone (IC) to construct a small library of four fused-ring electron acceptors. With this series, we systematically investigate the effects of the substituents on the end-groups on the electronic properties, charge transport, film morphology, and photovoltaic properties of the ITIC-Th series. The electron-withdrawing ability increases from methoxylated to unsubstituted, fluorinated, and difluorinated IC, leading to a downshift of energy levels and a redshift of absorption spectra. Optimized organic solar cells based on the ITIC-Th series show power conversion efficiencies ranging from 8.88% to 12.1%.

Graphical abstract: Enhancing the performance of the electron acceptor ITIC-Th via tailoring its end groups

Back to tab navigation

Supplementary files

Publication details

The article was received on 30 Nov 2017, accepted on 10 Jan 2018 and first published on 12 Jan 2018


Article type: Research Article
DOI: 10.1039/C7QM00547D
Citation: Mater. Chem. Front., 2018, Advance Article
  •   Request permissions

    Enhancing the performance of the electron acceptor ITIC-Th via tailoring its end groups

    Z. Li, S. Dai, J. Xin, L. Zhang, Y. Wu, J. Rech, F. Zhao, T. Li, K. Liu, Q. Liu, W. Ma, W. You, C. Wang and X. Zhan, Mater. Chem. Front., 2018, Advance Article , DOI: 10.1039/C7QM00547D

Search articles by author

Spotlight

Advertisements