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Novel unsymmetrical squaraine-based small molecules for organic solar cells

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Abstract

A new unsymmetrical squaraine dye (USQ) series for organic solar cells (OSC) is synthesized by a simple route without using highly toxic reagents. These USQs exhibit a low bandgap of 1.57 eV and HOMO energies of ∼−5.2–5.3 eV. Despite the very simple molecular structures, OSC devices based on these USQs exhibit an impressive open-circuit voltage of 0.92 V and power conversion efficiencies (PCEs) approaching 5%, achieved without using any additives or post film deposition treatment. The results indicate that USQs are promising materials for sustainable energy applications.

Graphical abstract: Novel unsymmetrical squaraine-based small molecules for organic solar cells

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Publication details

The article was received on 11 Oct 2017, accepted on 10 Dec 2017 and first published on 09 Jan 2018


Article type: Paper
DOI: 10.1039/C7TC04639A
Citation: J. Mater. Chem. C, 2018, Advance Article
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    Novel unsymmetrical squaraine-based small molecules for organic solar cells

    Y. Chen, G. Wang, L. Yang, J. Wu, F. S. Melkonyan, Y. Huang, Z. Lu, T. J. Marks and A. Facchetti, J. Mater. Chem. C, 2018, Advance Article , DOI: 10.1039/C7TC04639A

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