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Issue 7, 2017
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Halogenated conjugated molecules for ambipolar field-effect transistors and non-fullerene organic solar cells

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Abstract

A series of halogenated conjugated molecules, containing F, Cl, Br and I, were easily prepared via Knoevenagel condensation and applied in field-effect transistors and organic solar cells. Halogenated conjugated materials were found to possess deep frontier energy levels and high crystallinity compared to their non-halogenated analogues, which is due to the strong electronegativity and heavy atom effect of halogens. As a result, halogenated semiconductors provide high electron mobilities up to 1.3 cm2 Vāˆ’1 sāˆ’1 in transistors and high efficiencies over 9% in non-fullerene solar cells.

Graphical abstract: Halogenated conjugated molecules for ambipolar field-effect transistors and non-fullerene organic solar cells

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Supplementary files

Article information


Submitted
09 Feb 2017
Accepted
22 Feb 2017
First published
23 Feb 2017

Mater. Chem. Front., 2017,1, 1389-1395
Article type
Research Article

Halogenated conjugated molecules for ambipolar field-effect transistors and non-fullerene organic solar cells

F. Yang, C. Li, W. Lai, A. Zhang, H. Huang and W. Li, Mater. Chem. Front., 2017, 1, 1389
DOI: 10.1039/C7QM00025A

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