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Issue 36, 2014
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A star-shaped D–π–A small molecule based on a tris(2-methoxyphenyl)amine core for highly efficient solution-processed organic solar cells

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Abstract

A new star-shaped D–π–A small molecule, 2,2′,2′′-{nitrilotris[(3-methoxy-4,1-phenylene)-2,2′-bithiene-5′,5-diyleth-1-yl-1-ylidene]}trimalononitrile N(Ph(OMe)-2T-DCN-Me)3, with high efficiency potential for photovoltaic applications was synthesized. Introducing a soluble tris(2-methoxyphenyl)amine (TPA-MeO) core unit can significantly improve the solubility of star-shaped small molecules without negatively impacting intramolecular conjugation and intermolecular solid state arrangements. Solution-processed organic solar cells based on a blend of N(Ph(OMe)-2T-DCN-Me)3 and PC70BM show an initially high power conversion efficiency of over 4% under simulated AM 1.5.

Graphical abstract: A star-shaped D–π–A small molecule based on a tris(2-methoxyphenyl)amine core for highly efficient solution-processed organic solar cells

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Submitted
15 Jun 2014
Accepted
11 Jul 2014
First published
14 Jul 2014

J. Mater. Chem. C, 2014,2, 7614-7620
Article type
Paper
Author version available

A star-shaped D–π–A small molecule based on a tris(2-methoxyphenyl)amine core for highly efficient solution-processed organic solar cells

J. Min, Y. N. Luponosov, A. N. Solodukhin, N. Kausch-Busies, S. A. Ponomarenko, T. Ameri and C. J. Brabec, J. Mater. Chem. C, 2014, 2, 7614
DOI: 10.1039/C4TC01277A

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