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

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

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 (...

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Veröffentlicht in:Journal of materials chemistry. C, Materials for optical and electronic devices Materials for optical and electronic devices, 2014-01, Vol.2 (36), p.7614-7620
Hauptverfasser: Min, Jie, Luponosov, Yuriy N., Solodukhin, Alexander N., Kausch-Busies, Nina, Ponomarenko, Sergei A., Ameri, Tayebeh, Brabec, Christoph J.
Format: Artikel
Sprache:eng
Schlagworte:
Blends
Conjugation
Energy conversion efficiency
Nitriles
Photovoltaic cells
Simulation
Solar cells
Solubility
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Zusammenfassung: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 PC 70 BM show an initially high power conversion efficiency of over 4% under simulated AM 1.5.
ISSN:2050-7526
2050-7534
DOI:10.1039/C4TC01277A